- 24 Oct, 2014 15 commits
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David S. Miller authored
Sebastian Hesselbarth says: ==================== Marvell PXA168 libphy handling and Berlin Ethernet This patch series deals with a removing a IP feature that can be found on all currently supported Marvell Ethernet IP (pxa168_eth, mv643xx_eth, mvneta). The MAC IP allows to automatically perform PHY auto-negotiation without software interaction. However, this feature (a) fundamentally clashes with the way libphy works and (b) is unable to deal with quirky PHYs that require special treatment. In this series, pxa168_eth driver is rewritten to completely disable that feature and properly deal with libphy provided PHYs. As usual, a branch on top of v3.18-rc1 can be found at git://git.infradead.org/users/hesselba/linux-berlin.git devel/bg2-bg2cd-eth-v2 Patches 1-5 should go through David's net tree, I'll pick up the DT patches 6-9. There have been some changes, compared to the RFT - added phy-connection-type property to BG2Q PHY DT node - bail out from pxa168_eth_adjust_link when there is no change in PHY parameters. Also, add a call to phy_print_status. compared to v1 - move phy-connection-type to ethernet node instead of PHY node Patch 1 adds support for Marvell 88E3016 FastEthernet PHY that is also integrated in Marvell Berlin BG2/BG2CD SoCs. Patch 2 allows to pass phy_interface_t on pxa168_eth platform_data that is only used by mach-mmp/gplug. From the board setup, I guessed gplug's PHY is connected via RMII. The patch still isn't even compile tested. Patches 3-5 prepare proper libphy handling and finally remove all in-driver PHY mangling related to the feature explained above. Patches 6-9 add corresponding ethernet DT nodes to BG2, BG2CD, add a phy-connection-type property to BG2Q and enable ethernet on BG2-based Sony NSZ-GS7. I have tested all this on GS7 successfully with ip=dhcp on 100M FD. ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sebastian Hesselbarth authored
With properly using libphy PHYs now, remove the in-driver PHY mangling. Tested-by:
Antoine Ténart <antoine.tenart@free-electrons.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sebastian Hesselbarth authored
Marvell Ethernet IP supports PHY negotiation driven by HW. This fundamentally clashes with libphy (software) driven negotiation and also cannot cope with quirky PHYs. Therefore, always disable any HW negotiation features and properly use libphy's phy_device. Tested-by:
Antoine Ténart <antoine.tenart@free-electrons.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sebastian Hesselbarth authored
Current libphy handling in pxa168_eth lacks proper phy_connect. Prepare to fix this by first moving phy properties from platform_data to private driver data. Tested-by:
Antoine Ténart <antoine.tenart@free-electrons.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sebastian Hesselbarth authored
The PXA168 Ethernet IP support MII and RMII connection to its PHY. Currently, pxa168 platform_data does not provide a way to pass that and there is one user of pxa168 platform_data (mach-mmp/gplug). Given the pinctrl settings of gplug it uses RMII, so add and pass a corresponding phy_interface_t. Tested-by:
Antoine Ténart <antoine.tenart@free-electrons.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sebastian Hesselbarth authored
Marvell 88E3016 is a FastEthernet PHY that also can be found in Marvell Berlin SoCs as integrated PHY. Tested-by:
Antoine Ténart <antoine.tenart@free-electrons.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Geert Uytterhoeven authored
As of commit e4dc601b ("m68k: Disable/restore interrupts in hwreg_present()/hwreg_write()"), this is no longer needed. Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Geert Uytterhoeven authored
As of commit e4dc601b ("m68k: Disable/restore interrupts in hwreg_present()/hwreg_write()"), this is no longer needed. Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Rasmus Villemoes authored
Both image_data and typhoon_fw->data are const u8*, so the cast to u8* is unnecessary and confusing. Signed-off-by:
Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by:
David Dillow <dave@thedillows.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sébastien Barré authored
sctp_addr_is_valid() only appeared in its definition. Acked-by:
Neil Horman <nhorman@tuxdriver.com> Signed-off-by:
Sébastien Barré <sebastien.barre@uclouvain.be> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Martin KaFai Lau says: ==================== ipv6: Reduce the number of fib6_lookup() calls from ip6_pol_route() This patch set is trying to reduce the number of fib6_lookup() calls from ip6_pol_route(). I have adapted davem's udpflooda and kbench_mod test (https://git.kernel.org/pub/scm/linux/kernel/git/davem/net_test_tools.git) to support IPv6 and here is the result: Before: [root]# for i in $(seq 1 3); do time ./udpflood -l 20000000 -c 250 2401:face:face:face::2; done real 0m34.190s user 0m3.047s sys 0m31.108s real 0m34.635s user 0m3.125s sys 0m31.475s real 0m34.517s user 0m3.034s sys 0m31.449s [root]# insmod ip6_route_kbench.ko oif=2 src=2401:face:face:face::1 dst=2401:face:face:face::2 [ 660.160976] ip6_route_kbench: ip6_route_output tdiff: 933 [ 660.207261] ip6_route_kbench: ip6_route_output tdiff: 988 [ 660.253492] ip6_route_kbench: ip6_route_output tdiff: 896 [ 660.298862] ip6_route_kbench: ip6_route_output tdiff: 898 After: [root]# for i in $(seq 1 3); do time ./udpflood -l 20000000 -c 250 2401:face:face:face::2; done real 0m32.695s user 0m2.925s sys 0m29.737s real 0m32.636s user 0m3.007s sys 0m29.596s real 0m32.797s user 0m2.866s sys 0m29.898s [root]# insmod ip6_route_kbench.ko oif=2 src=2401:face:face:face::1 dst=2401:face:face:face::2 [ 881.220793] ip6_route_kbench: ip6_route_output tdiff: 684 [ 881.253477] ip6_route_kbench: ip6_route_output tdiff: 640 [ 881.286867] ip6_route_kbench: ip6_route_output tdiff: 630 [ 881.320749] ip6_route_kbench: ip6_route_output tdiff: 653 /****************************** udpflood.c ******************************/ /* It is an adaptation of the Eric Dumazet's and David Miller's * udpflood tool, by adding IPv6 support. */ typedef uint32_t u32; static int debug =3D 0; /* Allow -fstrict-aliasing */ typedef union sa_u { struct sockaddr_storage a46; struct sockaddr_in a4; struct sockaddr_in6 a6; } sa_u; static int usage(void) { printf("usage: udpflood [ -l count ] [ -m message_size ] [ -c num_ip_addrs= ] IP_ADDRESS\n"); return -1; } static u32 get_last32h(const sa_u *sa) { if (sa->a46.ss_family =3D=3D PF_INET) return ntohl(sa->a4.sin_addr.s_addr); else return ntohl(sa->a6.sin6_addr.s6_addr32[3]); } static void set_last32h(sa_u *sa, u32 last32h) { if (sa->a46.ss_family =3D=3D PF_INET) sa->a4.sin_addr.s_addr =3D htonl(last32h); else sa->a6.sin6_addr.s6_addr32[3] =3D htonl(last32h); } static void print_saddr(const sa_u *sa, const char *msg) { char buf[64]; if (!debug) return; switch (sa->a46.ss_family) { case PF_INET: inet_ntop(PF_INET, &(sa->a4.sin_addr.s_addr), buf, sizeof(buf)); break; case PF_INET6: inet_ntop(PF_INET6, &(sa->a6.sin6_addr), buf, sizeof(buf)); break; } printf("%s: %s\n", msg, buf); } static int send_packets(const sa_u *sa, size_t num_addrs, int count, int ms= g_sz) { char *msg =3D malloc(msg_sz); sa_u saddr; u32 start_addr32h, end_addr32h, cur_addr32h; int fd, i, err; if (!msg) return -ENOMEM; memset(msg, 0, msg_sz); memcpy(&saddr, sa, sizeof(saddr)); cur_addr32h =3D start_addr32h =3D get_last32h(&saddr); end_addr32h =3D start_addr32h + num_addrs; fd =3D socket(saddr.a46.ss_family, SOCK_DGRAM, 0); if (fd < 0) { perror("socket"); err =3D fd; goto out_nofd; } /* connect to avoid the kernel spending time in figuring * out the source address (i.e pin the src address) */ err =3D connect(fd, (struct sockaddr *) &saddr, sizeof(saddr)); if (err < 0) { perror("connect"); goto out; } print_saddr(&saddr, "start_addr"); for (i =3D 0; i < count; i++) { print_saddr(&saddr, "sendto"); err =3D sendto(fd, msg, msg_sz, 0, (struct sockaddr *)&saddr, sizeof(saddr)); if (err < 0) { perror("sendto"); goto out; } if (++cur_addr32h >=3D end_addr32h) cur_addr32h =3D start_addr32h; set_last32h(&saddr, cur_addr32h); } err =3D 0; out: close(fd); out_nofd: free(msg); return err; } int main(int argc, char **argv, char **envp) { int port, msg_sz, count, num_addrs, ret; sa_u start_addr; port =3D 6000; msg_sz =3D 32; count =3D 10000000; num_addrs =3D 1; while ((ret =3D getopt(argc, argv, "dl:s:p:c:")) >=3D 0) { switch (ret) { case 'l': sscanf(optarg, "%d", &count); break; case 's': sscanf(optarg, "%d", &msg_sz); break; case 'p': sscanf(optarg, "%d", &port); break; case 'c': sscanf(optarg, "%d", &num_addrs); break; case 'd': debug =3D 1; break; case '?': return usage(); } } if (num_addrs < 1) return usage(); if (!argv[optind]) return usage(); start_addr.a4.sin_port =3D htons(port); if (inet_pton(PF_INET, argv[optind], &start_addr.a4.sin_addr)) start_addr.a46.ss_family =3D PF_INET; else if (inet_pton(PF_INET6, argv[optind], &start_addr.a6.sin6_addr.s6_add= r)) start_addr.a46.ss_family =3D PF_INET6; else return usage(); return send_packets(&start_addr, num_addrs, count, msg_sz); } /****************** ip6_route_kbench_mod.c ******************/ /* We can't just use "get_cycles()" as on some platforms, such * as sparc64, that gives system cycles rather than cpu clock * cycles. */ static inline unsigned long long get_tick(void) { unsigned long long t; __asm__ __volatile__("rd %%tick, %0" : "=r" (t)); return t; } static inline unsigned long long get_tick(void) { unsigned long long t; rdtscll(t); return t; } static inline unsigned long long get_tick(void) { return get_cycles(); } static int flow_oif = DEFAULT_OIF; static int flow_iif = DEFAULT_IIF; static u32 flow_mark = DEFAULT_MARK; static struct in6_addr flow_dst_ip_addr; static struct in6_addr flow_src_ip_addr; static int flow_tos = DEFAULT_TOS; static char dst_string[64]; static char src_string[64]; module_param_string(dst, dst_string, sizeof(dst_string), 0); module_param_string(src, src_string, sizeof(src_string), 0); static int __init flow_setup(void) { if (dst_string[0] && !in6_pton(dst_string, -1, &flow_dst_ip_addr.s6_addr[0], -1, NULL)) { pr_info("cannot parse \"%s\"\n", dst_string); return -1; } if (src_string[0] && !in6_pton(src_string, -1, &flow_src_ip_addr.s6_addr[0], -1, NULL)) { pr_info("cannot parse \"%s\"\n", dst_string); return -1; } return 0; } module_param_named(oif, flow_oif, int, 0); module_param_named(iif, flow_iif, int, 0); module_param_named(mark, flow_mark, uint, 0); module_param_named(tos, flow_tos, int, 0); static int warmup_count = DEFAULT_WARMUP_COUNT; module_param_named(count, warmup_count, int, 0); static void flow_init(struct flowi6 *fl6) { memset(fl6, 0, sizeof(*fl6)); fl6->flowi6_proto = IPPROTO_ICMPV6; fl6->flowi6_oif = flow_oif; fl6->flowi6_iif = flow_iif; fl6->flowi6_mark = flow_mark; fl6->flowi6_tos = flow_tos; fl6->daddr = flow_dst_ip_addr; fl6->saddr = flow_src_ip_addr; } static struct sk_buff * fake_skb_get(void) { struct ipv6hdr *hdr; struct sk_buff *skb; skb = alloc_skb(4096, GFP_KERNEL); if (!skb) { pr_info("Cannot alloc SKB for test\n"); return NULL; } skb->dev = __dev_get_by_index(&init_net, flow_iif); if (skb->dev == NULL) { pr_info("Input device (%d) does not exist\n", flow_iif); goto err; } skb_reset_mac_header(skb); skb_reset_network_header(skb); skb_reserve(skb, MAX_HEADER + sizeof(struct ipv6hdr)); hdr = ipv6_hdr(skb); hdr->priority = 0; hdr->version = 6; memset(hdr->flow_lbl, 0, sizeof(hdr->flow_lbl)); hdr->payload_len = htons(sizeof(struct icmp6hdr)); hdr->nexthdr = IPPROTO_ICMPV6; hdr->saddr = flow_src_ip_addr; hdr->daddr = flow_dst_ip_addr; skb->protocol = htons(ETH_P_IPV6); skb->mark = flow_mark; return skb; err: kfree_skb(skb); return NULL; } static void do_full_output_lookup_bench(void) { unsigned long long t1, t2, tdiff; struct rt6_info *rt; struct flowi6 fl6; int i; rt = NULL; for (i = 0; i < warmup_count; i++) { flow_init(&fl6); rt = (struct rt6_info *)ip6_route_output(&init_net, NULL, &fl6); if (IS_ERR(rt)) break; ip6_rt_put(rt); } if (IS_ERR(rt)) { pr_info("ip_route_output_key: err=%ld\n", PTR_ERR(rt)); return; } flow_init(&fl6); t1 = get_tick(); rt = (struct rt6_info *)ip6_route_output(&init_net, NULL, &fl6); t2 = get_tick(); if (!IS_ERR(rt)) ip6_rt_put(rt); tdiff = t2 - t1; pr_info("ip6_route_output tdiff: %llu\n", tdiff); } static void do_full_input_lookup_bench(void) { unsigned long long t1, t2, tdiff; struct sk_buff *skb; struct rt6_info *rt; int err, i; skb = fake_skb_get(); if (skb == NULL) goto out_free; err = 0; local_bh_disable(); for (i = 0; i < warmup_count; i++) { ip6_route_input(skb); rt = (struct rt6_info *)skb_dst(skb); err = (!rt || rt == init_net.ipv6.ip6_null_entry); skb_dst_drop(skb); if (err) break; } local_bh_enable(); if (err) { pr_info("Input route lookup fails\n"); goto out_free; } local_bh_disable(); t1 = get_tick(); ip6_route_input(skb); t2 = get_tick(); local_bh_enable(); rt = (struct rt6_info *)skb_dst(skb); err = (!rt || rt == init_net.ipv6.ip6_null_entry); skb_dst_drop(skb); if (err) { pr_info("Input route lookup fails\n"); goto out_free; } tdiff = t2 - t1; pr_info("ip6_route_input tdiff: %llu\n", tdiff); out_free: kfree_skb(skb); } static void do_full_lookup_bench(void) { if (!flow_iif) do_full_output_lookup_bench(); else do_full_input_lookup_bench(); } static void do_bench(void) { do_full_lookup_bench(); do_full_lookup_bench(); do_full_lookup_bench(); do_full_lookup_bench(); } static int __init kbench_init(void) { if (flow_setup()) return -EINVAL; pr_info("flow [IIF(%d),OIF(%d),MARK(0x%08x),D("IP6_FMT")," "S("IP6_FMT"),TOS(0x%02x)]\n", flow_iif, flow_oif, flow_mark, IP6_PRT(flow_dst_ip_addr), IP6_PRT(flow_src_ip_addr), flow_tos); if (!cpu_has_tsc) { pr_err("X86 TSC is required, but is unavailable.\n"); return -EINVAL; } pr_info("sizeof(struct rt6_info)==%zu\n", sizeof(struct rt6_info)); do_bench(); return -ENODEV; } static void __exit kbench_exit(void) { } module_init(kbench_init); module_exit(kbench_exit); MODULE_LICENSE("GPL"); ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Martin KaFai Lau authored
This patch save the fn before doing rt6_backtrack. Hence, without redo-ing the fib6_lookup(), saved_fn can be used to redo rt6_select() with RT6_LOOKUP_F_REACHABLE off. Some minor changes I think make sense to review as a single patch: * Remove the 'out:' goto label. * Remove the 'reachable' variable. Only use the 'strict' variable instead. After this patch, "failing ip6_ins_rt()" should be the only case that requires a redo of fib6_lookup(). Cc: David Miller <davem@davemloft.net> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
Martin KaFai Lau <kafai@fb.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Martin KaFai Lau authored
When there is a RTF_CACHE hit, no need to redo fib6_lookup() with reachable=0. Cc: David Miller <davem@davemloft.net> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
Martin KaFai Lau <kafai@fb.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Martin KaFai Lau authored
It is the prep work to reduce the number of calls to fib6_lookup(). The BACKTRACK macro could be hard-to-read and error-prone due to its side effects (mainly goto). This patch is to: 1. Replace BACKTRACK macro with a function (fib6_backtrack) with the following return values: * If it is backtrack-able, returns next fn for retry. * If it reaches the root, returns NULL. 2. The caller needs to decide if a backtrack is needed (by testing rt == net->ipv6.ip6_null_entry). 3. Rename the goto labels in ip6_pol_route() to make the next few patches easier to read. Cc: David Miller <davem@davemloft.net> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
Martin KaFai Lau <kafai@fb.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Kenjiro Nakayama authored
Remove trailing whitespace in tcp.h icmp.c syncookies.c Signed-off-by:
Kenjiro Nakayama <nakayamakenjiro@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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- 22 Oct, 2014 13 commits
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Haiyang Zhang authored
total_data_buflen is used by netvsc_send() to decide if a packet can be put into send buffer. It should also include the size of RNDIS message before the Ethernet frame. Otherwise, a messge with total size bigger than send_section_size may be copied into the send buffer, and cause data corruption. [Request to include this patch to the Stable branches] Signed-off-by:
Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by:
K. Y. Srinivasan <kys@microsoft.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Tom Lendacky says: ==================== amd-xgbe: AMD XGBE driver fixes 2014-10-22 The following series of patches includes fixes to the driver. - Properly handle feature changes via ethtool by using correctly sized variables - Perform proper napi packet counting and budget checking This patch series is based on net. ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Lendacky, Thomas authored
Currently the amd-xgbe driver increments the packets processed counter each time a descriptor is processed. Since a packet can be represented by more than one descriptor incrementing the counter in this way is not appropriate. Also, since multiple descriptors cause the budget check to be short circuited, sometimes the returned value from the poll function would be larger than the budget value resulting in a WARN_ONCE being triggered. Update the polling logic to properly account for the number of packets processed and exit when the budget value is reached. Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Lendacky, Thomas authored
The ndo_set_features callback function was improperly using an unsigned int to save the current feature value for features such as NETIF_F_RXCSUM. Since that feature is in the upper 32 bits of a 64 bit variable the result was always 0 making it not possible to actually turn off the hardware RX checksum support. Change the unsigned int type to the netdev_features_t type in order to properly capture the current value and perform the proper operation. Signed-off-by:
Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Philipp Zabel authored
Since commit 278d2404 (net: fec: ptp: Enable PPS output based on ptp clock) fec_enet_interrupt calls fec_ptp_check_pps_event unconditionally, which calls into ptp_clock_event. If fep->ptp_clock is NULL, ptp_clock_event tries to dereference the NULL pointer. Since on i.MX53 fep->bufdesc_ex is not set, fec_ptp_init is never called, and fep->ptp_clock is NULL, which reliably causes a kernel panic. This patch adds a check for fep->ptp_clock == NULL in fec_enet_interrupt. Signed-off-by:
Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sathya Perla authored
The commit "net: Save TX flow hash in sock and set in skbuf on xmit" introduced the inet_set_txhash() and ip6_set_txhash() routines to calculate and record flow hash(sk_txhash) in the socket structure. sk_txhash is used to set skb->hash which is used to spread flows across multiple TXQs. But, the above routines are invoked before the source port of the connection is created. Because of this all outgoing connections that just differ in the source port get hashed into the same TXQ. This patch fixes this problem for IPv4/6 by invoking the the above routines after the source port is available for the socket. Fixes: b73c3d0e("net: Save TX flow hash in sock and set in skbuf on xmit") Signed-off-by:
Sathya Perla <sathya.perla@emulex.com> Acked-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Li RongQing authored
pskb_may_pull() maybe change skb->data and make nh and exthdr pointer oboslete, so recompute the nd and exthdr Signed-off-by:
Li RongQing <roy.qing.li@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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LEROY Christophe authored
After interface restart (eg: after link disconnection/reconnection), the bridge function doesn't work anymore. This is due to the promiscuous mode being cleared by the restart. The mac-fcc already includes code to set the promiscuous mode back during the restart. This patch adds the same handling to mac-fec and mac-scc. Tested with bridge function on MPC885 with FEC. Reported-by:
Germain Montoies <germain.montoies@c-s.fr> Signed-off-by:
Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Karl Beldan authored
The crafted header start address is from a driver supplied buffer, which one can reasonably expect to be aligned on a 4-bytes boundary. However ATM the TSO helper API is only used by ethernet drivers and the tcp header will then be aligned to a 2-bytes only boundary from the header start address. Signed-off-by:
Karl Beldan <karl.beldan@rivierawaves.com> Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Jon Cooper authored
write_count and insert_count can wrap around, making > check invalid. Fixes: 70b33fb0 ("sfc: add support for skb->xmit_more"). Signed-off-by:
Edward Cree <ecree@solarflare.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Sabrina Dubroca authored
Use netdev_alloc_pcpu_stats to allocate percpu stats and initialize syncp. Fixes: 22e0f8b9 "net: sched: make bstats per cpu and estimator RCU safe" Signed-off-by:
Sabrina Dubroca <sd@queasysnail.net> Acked-by:
Cong Wang <cwang@twopensource.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Alexei Starovoitov authored
while comparing for verifier state equivalency the comparison was missing a check for uninitialized register. Make sure it does so and add a testcase. Fixes: f1bca824 ("bpf: add search pruning optimization to verifier") Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
Alexei Starovoitov <ast@plumgrid.com> Acked-by:
Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Thomas Graf authored
The synchronize_rcu() in netlink_release() introduces unacceptable latency. Reintroduce minimal lookup so we can drop the synchronize_rcu() until socket destruction has been RCUfied. Cc: David S. Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Reported-by:
Steinar H. Gunderson <sgunderson@bigfoot.com> Reported-and-tested-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
Thomas Graf <tgraf@suug.ch> Signed-off-by:
David S. Miller <davem@davemloft.net>
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- 21 Oct, 2014 5 commits
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Ying Xue authored
When running tipcTC&tipcTS test suite, below lockdep unsafe locking scenario is reported: [ 1109.997854] [ 1109.997988] ================================= [ 1109.998290] [ INFO: inconsistent lock state ] [ 1109.998575] 3.17.0-rc1+ #113 Not tainted [ 1109.998762] --------------------------------- [ 1109.998762] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 1109.998762] swapper/7/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 1109.998762] (slock-AF_TIPC){+.?...}, at: [<ffffffffa0011969>] tipc_sk_rcv+0x49/0x2b0 [tipc] [ 1109.998762] {SOFTIRQ-ON-W} state was registered at: [ 1109.998762] [<ffffffff810a4770>] __lock_acquire+0x6a0/0x1d80 [ 1109.998762] [<ffffffff810a6555>] lock_acquire+0x95/0x1e0 [ 1109.998762] [<ffffffff81a2d1ce>] _raw_spin_lock+0x3e/0x80 [ 1109.998762] [<ffffffffa0011969>] tipc_sk_rcv+0x49/0x2b0 [tipc] [ 1109.998762] [<ffffffffa0004fe8>] tipc_link_xmit+0xa8/0xc0 [tipc] [ 1109.998762] [<ffffffffa000ec6f>] tipc_sendmsg+0x15f/0x550 [tipc] [ 1109.998762] [<ffffffffa000f165>] tipc_connect+0x105/0x140 [tipc] [ 1109.998762] [<ffffffff817676ee>] SYSC_connect+0xae/0xc0 [ 1109.998762] [<ffffffff81767b7e>] SyS_connect+0xe/0x10 [ 1109.998762] [<ffffffff817a9788>] compat_SyS_socketcall+0xb8/0x200 [ 1109.998762] [<ffffffff81a306e5>] sysenter_dispatch+0x7/0x1f [ 1109.998762] irq event stamp: 241060 [ 1109.998762] hardirqs last enabled at (241060): [<ffffffff8105a4ad>] __local_bh_enable_ip+0x6d/0xd0 [ 1109.998762] hardirqs last disabled at (241059): [<ffffffff8105a46f>] __local_bh_enable_ip+0x2f/0xd0 [ 1109.998762] softirqs last enabled at (241020): [<ffffffff81059a52>] _local_bh_enable+0x22/0x50 [ 1109.998762] softirqs last disabled at (241021): [<ffffffff8105a626>] irq_exit+0x96/0xc0 [ 1109.998762] [ 1109.998762] other info that might help us debug this: [ 1109.998762] Possible unsafe locking scenario: [ 1109.998762] [ 1109.998762] CPU0 [ 1109.998762] ---- [ 1109.998762] lock(slock-AF_TIPC); [ 1109.998762] <Interrupt> [ 1109.998762] lock(slock-AF_TIPC); [ 1109.998762] [ 1109.998762] *** DEADLOCK *** [ 1109.998762] [ 1109.998762] 2 locks held by swapper/7/0: [ 1109.998762] #0: (rcu_read_lock){......}, at: [<ffffffff81782dc9>] __netif_receive_skb_core+0x69/0xb70 [ 1109.998762] #1: (rcu_read_lock){......}, at: [<ffffffffa0001c90>] tipc_l2_rcv_msg+0x40/0x260 [tipc] [ 1109.998762] [ 1109.998762] stack backtrace: [ 1109.998762] CPU: 7 PID: 0 Comm: swapper/7 Not tainted 3.17.0-rc1+ #113 [ 1109.998762] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007 [ 1109.998762] ffffffff82745830 ffff880016c03828 ffffffff81a209eb 0000000000000007 [ 1109.998762] ffff880017b3cac0 ffff880016c03888 ffffffff81a1c5ef 0000000000000001 [ 1109.998762] ffff880000000001 ffff880000000000 ffffffff81012d4f 0000000000000000 [ 1109.998762] Call Trace: [ 1109.998762] <IRQ> [<ffffffff81a209eb>] dump_stack+0x4e/0x68 [ 1109.998762] [<ffffffff81a1c5ef>] print_usage_bug+0x1f1/0x202 [ 1109.998762] [<ffffffff81012d4f>] ? save_stack_trace+0x2f/0x50 [ 1109.998762] [<ffffffff810a406c>] mark_lock+0x28c/0x2f0 [ 1109.998762] [<ffffffff810a3440>] ? print_irq_inversion_bug.part.46+0x1f0/0x1f0 [ 1109.998762] [<ffffffff810a467d>] __lock_acquire+0x5ad/0x1d80 [ 1109.998762] [<ffffffff810a70dd>] ? trace_hardirqs_on+0xd/0x10 [ 1109.998762] [<ffffffff8108ace8>] ? sched_clock_cpu+0x98/0xc0 [ 1109.998762] [<ffffffff8108ad2b>] ? local_clock+0x1b/0x30 [ 1109.998762] [<ffffffff810a10dc>] ? lock_release_holdtime.part.29+0x1c/0x1a0 [ 1109.998762] [<ffffffff8108aa05>] ? sched_clock_local+0x25/0x90 [ 1109.998762] [<ffffffffa000dec0>] ? tipc_sk_get+0x60/0x80 [tipc] [ 1109.998762] [<ffffffff810a6555>] lock_acquire+0x95/0x1e0 [ 1109.998762] [<ffffffffa0011969>] ? tipc_sk_rcv+0x49/0x2b0 [tipc] [ 1109.998762] [<ffffffff810a6fb6>] ? trace_hardirqs_on_caller+0xa6/0x1c0 [ 1109.998762] [<ffffffff81a2d1ce>] _raw_spin_lock+0x3e/0x80 [ 1109.998762] [<ffffffffa0011969>] ? tipc_sk_rcv+0x49/0x2b0 [tipc] [ 1109.998762] [<ffffffffa000dec0>] ? tipc_sk_get+0x60/0x80 [tipc] [ 1109.998762] [<ffffffffa0011969>] tipc_sk_rcv+0x49/0x2b0 [tipc] [ 1109.998762] [<ffffffffa00076bd>] tipc_rcv+0x5ed/0x960 [tipc] [ 1109.998762] [<ffffffffa0001d1c>] tipc_l2_rcv_msg+0xcc/0x260 [tipc] [ 1109.998762] [<ffffffffa0001c90>] ? tipc_l2_rcv_msg+0x40/0x260 [tipc] [ 1109.998762] [<ffffffff81783345>] __netif_receive_skb_core+0x5e5/0xb70 [ 1109.998762] [<ffffffff81782dc9>] ? __netif_receive_skb_core+0x69/0xb70 [ 1109.998762] [<ffffffff81784eb9>] ? dev_gro_receive+0x259/0x4e0 [ 1109.998762] [<ffffffff817838f6>] __netif_receive_skb+0x26/0x70 [ 1109.998762] [<ffffffff81783acd>] netif_receive_skb_internal+0x2d/0x1f0 [ 1109.998762] [<ffffffff81785518>] napi_gro_receive+0xd8/0x240 [ 1109.998762] [<ffffffff815bf854>] e1000_clean_rx_irq+0x2c4/0x530 [ 1109.998762] [<ffffffff815c1a46>] e1000_clean+0x266/0x9c0 [ 1109.998762] [<ffffffff8108ad2b>] ? local_clock+0x1b/0x30 [ 1109.998762] [<ffffffff8108aa05>] ? sched_clock_local+0x25/0x90 [ 1109.998762] [<ffffffff817842b1>] net_rx_action+0x141/0x310 [ 1109.998762] [<ffffffff810bd710>] ? handle_fasteoi_irq+0xe0/0x150 [ 1109.998762] [<ffffffff81059fa6>] __do_softirq+0x116/0x4d0 [ 1109.998762] [<ffffffff8105a626>] irq_exit+0x96/0xc0 [ 1109.998762] [<ffffffff81a30d07>] do_IRQ+0x67/0x110 [ 1109.998762] [<ffffffff81a2ee2f>] common_interrupt+0x6f/0x6f [ 1109.998762] <EOI> [<ffffffff8100d2b7>] ? default_idle+0x37/0x250 [ 1109.998762] [<ffffffff8100d2b5>] ? default_idle+0x35/0x250 [ 1109.998762] [<ffffffff8100dd1f>] arch_cpu_idle+0xf/0x20 [ 1109.998762] [<ffffffff810999fd>] cpu_startup_entry+0x27d/0x4d0 [ 1109.998762] [<ffffffff81034c78>] start_secondary+0x188/0x1f0 When intra-node messages are delivered from one process to another process, tipc_link_xmit() doesn't disable BH before it directly calls tipc_sk_rcv() on process context to forward messages to destination socket. Meanwhile, if messages delivered by remote node arrive at the node and their destinations are also the same socket, tipc_sk_rcv() running on process context might be preempted by tipc_sk_rcv() running BH context. As a result, the latter cannot obtain the socket lock as the lock was obtained by the former, however, the former has no chance to be run as the latter is owning the CPU now, so headlock happens. To avoid it, BH should be always disabled in tipc_sk_rcv(). Signed-off-by:
Ying Xue <ying.xue@windriver.com> Reviewed-by:
Jon Maloy <jon.maloy@ericsson.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Ying Xue authored
Locking dependency detected below possible unsafe locking scenario: CPU0 CPU1 T0: tipc_named_rcv() tipc_rcv() T1: [grab nametble write lock]* [grab node lock]* T2: tipc_update_nametbl() tipc_node_link_up() T3: tipc_nodesub_subscribe() tipc_nametbl_publish() T4: [grab node lock]* [grab nametble write lock]* The opposite order of holding nametbl write lock and node lock on above two different paths may result in a deadlock. If we move the the updating of the name table after link state named out of node lock, the reverse order of holding locks will be eliminated, and as a result, the deadlock risk. Signed-off-by:
Ying Xue <ying.xue@windriver.com> Signed-off-by:
Jon Maloy <jon.maloy@ericsson.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Govindarajulu Varadarajan says: ==================== enic: Bug fixes This series fixes the following problem. Please apply this to net. ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Govindarajulu Varadarajan authored
In enic_stop, we disable preemption using local_bh_disable(). We disable preemption to wait for busy_poll to finish. napi_disable should not be called here as it might sleep. Moving napi_disable() call out side of local_bh_disable. BUG: sleeping function called from invalid context at include/linux/netdevice.h:477 in_atomic(): 1, irqs_disabled(): 0, pid: 443, name: ifconfig INFO: lockdep is turned off. Preemption disabled at:[<ffffffffa029c5c4>] enic_rfs_flw_tbl_free+0x34/0xd0 [enic] CPU: 31 PID: 443 Comm: ifconfig Not tainted 3.17.0-netnext-05504-g59f35b81 #268 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 ffff8800dac10000 ffff88020b8dfcb8 ffffffff8148a57c 0000000000000000 ffff88020b8dfcd0 ffffffff8107e253 ffff8800dac12a40 ffff88020b8dfd10 ffffffffa029305b ffff88020b8dfd48 ffff8800dac10000 ffff88020b8dfd48 Call Trace: [<ffffffff8148a57c>] dump_stack+0x4e/0x7a [<ffffffff8107e253>] __might_sleep+0x123/0x1a0 [<ffffffffa029305b>] enic_stop+0xdb/0x4d0 [enic] [<ffffffff8138ed7d>] __dev_close_many+0x9d/0xf0 [<ffffffff8138ef81>] __dev_close+0x31/0x50 [<ffffffff813974a8>] __dev_change_flags+0x98/0x160 [<ffffffff81397594>] dev_change_flags+0x24/0x60 [<ffffffff814085fd>] devinet_ioctl+0x63d/0x710 [<ffffffff81139c16>] ? might_fault+0x56/0xc0 [<ffffffff81409ef5>] inet_ioctl+0x65/0x90 [<ffffffff813768e0>] sock_do_ioctl+0x20/0x50 [<ffffffff81376ebb>] sock_ioctl+0x20b/0x2e0 [<ffffffff81197250>] do_vfs_ioctl+0x2e0/0x500 [<ffffffff81492619>] ? sysret_check+0x22/0x5d [<ffffffff81285f23>] ? __this_cpu_preempt_check+0x13/0x20 [<ffffffff8109fe19>] ? trace_hardirqs_on_caller+0x119/0x270 [<ffffffff811974ac>] SyS_ioctl+0x3c/0x80 [<ffffffff814925ed>] system_call_fastpath+0x1a/0x1f Signed-off-by:
Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Govindarajulu Varadarajan authored
The following warning is shown when spinlock debug is enabled. This occurs when enic_flow_may_expire timer function is running and enic_stop is called on same CPU. Fix this by using spink_lock_bh(). ================================= [ INFO: inconsistent lock state ] 3.17.0-netnext-05504-g59f35b81 #268 Not tainted --------------------------------- inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. ifconfig/443 [HC0[0]:SC0[0]:HE1:SE1] takes: (&(&enic->rfs_h.lock)->rlock){+.?...}, at: enic_rfs_flw_tbl_free+0x34/0xd0 [enic] {IN-SOFTIRQ-W} state was registered at: [<ffffffff810a25af>] __lock_acquire+0x83f/0x21c0 [<ffffffff810a45f2>] lock_acquire+0xa2/0xd0 [<ffffffff814913fc>] _raw_spin_lock+0x3c/0x80 [<ffffffffa029c3d5>] enic_flow_may_expire+0x25/0x130[enic] [<ffffffff810bcd07>] call_timer_fn+0x77/0x100 [<ffffffff810bd8e3>] run_timer_softirq+0x1e3/0x270 [<ffffffff8105f9ae>] __do_softirq+0x14e/0x280 [<ffffffff8105fdae>] irq_exit+0x8e/0xb0 [<ffffffff8103da0f>] smp_apic_timer_interrupt+0x3f/0x50 [<ffffffff81493742>] apic_timer_interrupt+0x72/0x80 [<ffffffff81018143>] default_idle+0x13/0x20 [<ffffffff81018a6a>] arch_cpu_idle+0xa/0x10 [<ffffffff81097676>] cpu_startup_entry+0x2c6/0x330 [<ffffffff8103b7ad>] start_secondary+0x21d/0x290 irq event stamp: 2997 hardirqs last enabled at (2997): [<ffffffff81491865>] _raw_spin_unlock_irqrestore+0x65/0x90 hardirqs last disabled at (2996): [<ffffffff814915e6>] _raw_spin_lock_irqsave+0x26/0x90 softirqs last enabled at (2968): [<ffffffff813b57a3>] dev_deactivate_many+0x213/0x260 softirqs last disabled at (2966): [<ffffffff813b5783>] dev_deactivate_many+0x1f3/0x260 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(&enic->rfs_h.lock)->rlock); <Interrupt> lock(&(&enic->rfs_h.lock)->rlock); *** DEADLOCK *** Reported-by:
Jan Stancek <jstancek@redhat.com> Signed-off-by:
Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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- 20 Oct, 2014 6 commits
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David S. Miller authored
Florian Westphal says: ==================== net: minor gso encapsulation fixes The following series fixes a minor bug in the gso segmentation handlers when encapsulation offload is used. Theoretically this could cause kernel panic when the stack tries to software-segment such a GRE offload packet, but it looks like there is only one affected call site (tbf scheduler) and it handles NULL return value. I've included a followup patch to add IS_ERR_OR_NULL checks where needed. While looking into this, I also found that size computation of the individual segments is incorrect if skb->encapsulation is set. Please see individual patches for delta vs. v1. ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Florian Westphal authored
if ->encapsulation is set we have to use inner_tcp_hdrlen and add the size of the inner network headers too. This is 'mostly harmless'; tbf might send skb that is slightly over quota or drop skb even if it would have fit. Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Florian Westphal authored
skb_gso_segment has three possible return values: 1. a pointer to the first segmented skb 2. an errno value (IS_ERR()) 3. NULL. This can happen when GSO is used for header verification. However, several callers currently test IS_ERR instead of IS_ERR_OR_NULL and would oops when NULL is returned. Note that these call sites should never actually see such a NULL return value; all callers mask out the GSO bits in the feature argument. However, there have been issues with some protocol handlers erronously not respecting the specified feature mask in some cases. It is preferable to get 'have to turn off hw offloading, else slow' reports rather than 'kernel crashes'. Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Florian Westphal authored
skb_gso_segment() has a 'features' argument representing offload features available to the output path. A few handlers, e.g. GRE, instead re-fetch the features of skb->dev and use those instead of the provided ones when handing encapsulation/tunnels. Depending on dev->hw_enc_features of the output device skb_gso_segment() can then return NULL even when the caller has disabled all GSO feature bits, as segmentation of inner header thinks device will take care of segmentation. This e.g. affects the tbf scheduler, which will silently drop GRE-encap GSO skbs that did not fit the remaining token quota as the segmentation does not work when device supports corresponding hw offload capabilities. Cc: Pravin B Shelar <pshelar@nicira.com> Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller authored
Pablo Neira Ayuso says: ==================== netfilter fixes for net The following patchset contains netfilter fixes for your net tree, they are: 1) Fix missing MODULE_LICENSE() in the new nf_reject_ipv{4,6} modules. 2) Restrict nat and masq expressions to the nat chain type. Otherwise, users may crash their kernel if they attach a nat/masq rule to a non nat chain. 3) Fix hook validation in nft_compat when non-base chains are used. Basically, initialize hook_mask to zero. 4) Make sure you use match/targets in nft_compat from the right chain type. The existing validation relies on the table name which can be avoided by 5) Better netlink attribute validation in nft_nat. This expression has to reject the configuration when no address and proto configurations are specified. 6) Interpret NFTA_NAT_REG_*_MAX if only if NFTA_NAT_REG_*_MIN is set. Yet another sanity check to reject incorrect configurations from userspace. 7) Conditional NAT attribute dumping depending on the existing configuration. ==================== Signed-off-by:
David S. Miller <davem@davemloft.net>
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Ian Morgan authored
The following patch fixes a bug which causes the ax88179_178a driver to be incapable of being added to a bond. When I brought up the issue with the bonding maintainers, they indicated that the real problem was with the NIC driver which must return zero for success (of setting the MAC address). I see that several other NIC drivers follow that pattern by either simply always returing zero, or by passing through a negative (error) result while rewriting any positive return code to zero. With that same philisophy applied to the ax88179_178a driver, it allows it to work correctly with the bonding driver. I believe this is suitable for queuing in -stable, as it's a small, simple, and obvious fix that corrects a defect with no other known workaround. This patch is against vanilla 3.17(.0). Signed-off-by:
Ian Morgan <imorgan@primordial.ca> drivers/net/usb/ax88179_178a.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) Signed-off-by:
David S. Miller <davem@davemloft.net>
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- 19 Oct, 2014 1 commit
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git://github.com/jonmason/ntbLinus Torvalds authored
Pull ntb (non-transparent bridge) updates from Jon Mason: "Add support for Haswell NTB split BARs, a debugfs entry for basic debugging info, and some code clean-ups" * tag 'ntb-3.18' of git://github.com/jonmason/ntb: ntb: Adding split BAR support for Haswell platforms ntb: use errata flag set via DID to implement workaround ntb: conslidate reading of PPD to move platform detection earlier ntb: move platform detection to separate function NTB: debugfs device entry
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