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Commit 5656b6ca authored by David S. Miller's avatar David S. Miller
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Merge branch 'net-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vxy/lksctp-dev

parents c1ac403b 4814326b
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Documentation/feature-removal-schedule.txt
View file @ 5656b6ca
......@@ -302,18 +302,6 @@ Who: ocfs2-devel@oss.oracle.com
---------------------------
What: SCTP_GET_PEER_ADDRS_NUM_OLD, SCTP_GET_PEER_ADDRS_OLD,
SCTP_GET_LOCAL_ADDRS_NUM_OLD, SCTP_GET_LOCAL_ADDRS_OLD
When: June 2009
Why: A newer version of the options have been introduced in 2005 that
removes the limitions of the old API. The sctp library has been
converted to use these new options at the same time. Any user
space app that directly uses the old options should convert to using
the new options.
Who: Vlad Yasevich <vladislav.yasevich@hp.com>
---------------------------
What: Ability for non root users to shm_get hugetlb pages based on mlock
resource limits
When: 2.6.31
......
include/linux/sctp.h
View file @ 5656b6ca
......@@ -242,6 +242,7 @@ enum {
SCTP_DATA_FIRST_FRAG = 0x02,
SCTP_DATA_NOT_FRAG = 0x03,
SCTP_DATA_UNORDERED = 0x04,
SCTP_DATA_SACK_IMM = 0x08,
};
enum { SCTP_DATA_FRAG_MASK = 0x03, };
......
include/net/sctp/constants.h
View file @ 5656b6ca
......@@ -308,6 +308,10 @@ enum { SCTP_MAX_GABS = 16 };
#define SCTP_DEFAULT_MINWINDOW 1500 /* default minimum rwnd size */
#define SCTP_DEFAULT_MAXWINDOW 65535 /* default rwnd size */
#define SCTP_DEFAULT_RWND_SHIFT 4 /* by default, update on 1/16 of
* rcvbuf, which is 1/8 of initial
* window
*/
#define SCTP_DEFAULT_MAXSEGMENT 1500 /* MTU size, this is the limit
* to which we will raise the P-MTU.
*/
......
include/net/sctp/sm.h
View file @ 5656b6ca
......@@ -243,7 +243,8 @@ struct sctp_chunk *sctp_make_op_error(const struct sctp_association *,
const struct sctp_chunk *chunk,
__be16 cause_code,
const void *payload,
size_t paylen);
size_t paylen,
size_t reserve_tail);
struct sctp_chunk *sctp_make_asconf_update_ip(struct sctp_association *,
union sctp_addr *,
......
include/net/sctp/structs.h
View file @ 5656b6ca
......@@ -231,6 +231,11 @@ extern struct sctp_globals {
/* Flag to indicate whether computing and verifying checksum
* is disabled. */
int checksum_disable;
/* Threshold for rwnd update SACKS. Receive buffer shifted this many
* bits is an indicator of when to send and window update SACK.
*/
int rwnd_update_shift;
} sctp_globals;
#define sctp_rto_initial (sctp_globals.rto_initial)
......@@ -267,6 +272,7 @@ extern struct sctp_globals {
#define sctp_prsctp_enable (sctp_globals.prsctp_enable)
#define sctp_auth_enable (sctp_globals.auth_enable)
#define sctp_checksum_disable (sctp_globals.checksum_disable)
#define sctp_rwnd_upd_shift (sctp_globals.rwnd_update_shift)
/* SCTP Socket type: UDP or TCP style. */
typedef enum {
......@@ -936,6 +942,8 @@ struct sctp_transport {
/* Data that has been sent, but not acknowledged. */
__u32 flight_size;
__u32 burst_limited; /* Holds old cwnd when max.burst is applied */
/* TSN marking the fast recovery exit point */
__u32 fast_recovery_exit;
......@@ -944,12 +952,6 @@ struct sctp_transport {
/* Source address. */
union sctp_addr saddr;
/* When was the last time(in jiffies) that a data packet was sent on
* this transport? This is used to adjust the cwnd when the transport
* becomes inactive.
*/
unsigned long last_time_used;
/* Heartbeat interval: The endpoint sends out a Heartbeat chunk to
* the destination address every heartbeat interval.
*/
......@@ -1070,6 +1072,8 @@ void sctp_transport_put(struct sctp_transport *);
void sctp_transport_update_rto(struct sctp_transport *, __u32);
void sctp_transport_raise_cwnd(struct sctp_transport *, __u32, __u32);
void sctp_transport_lower_cwnd(struct sctp_transport *, sctp_lower_cwnd_t);
void sctp_transport_burst_limited(struct sctp_transport *);
void sctp_transport_burst_reset(struct sctp_transport *);
unsigned long sctp_transport_timeout(struct sctp_transport *);
void sctp_transport_reset(struct sctp_transport *);
void sctp_transport_update_pmtu(struct sctp_transport *, u32);
......
include/net/sctp/user.h
View file @ 5656b6ca
......@@ -60,96 +60,49 @@ typedef __s32 sctp_assoc_t;
/* The following symbols come from the Sockets API Extensions for
* SCTP <draft-ietf-tsvwg-sctpsocket-07.txt>.
*/
enum sctp_optname {
SCTP_RTOINFO,
#define SCTP_RTOINFO SCTP_RTOINFO
SCTP_ASSOCINFO,
#define SCTP_ASSOCINFO SCTP_ASSOCINFO
SCTP_INITMSG,
#define SCTP_INITMSG SCTP_INITMSG
SCTP_NODELAY, /* Get/set nodelay option. */
#define SCTP_NODELAY SCTP_NODELAY
SCTP_AUTOCLOSE,
#define SCTP_AUTOCLOSE SCTP_AUTOCLOSE
SCTP_SET_PEER_PRIMARY_ADDR,
#define SCTP_SET_PEER_PRIMARY_ADDR SCTP_SET_PEER_PRIMARY_ADDR
SCTP_PRIMARY_ADDR,
#define SCTP_PRIMARY_ADDR SCTP_PRIMARY_ADDR
SCTP_ADAPTATION_LAYER,
#define SCTP_ADAPTATION_LAYER SCTP_ADAPTATION_LAYER
SCTP_DISABLE_FRAGMENTS,
#define SCTP_DISABLE_FRAGMENTS SCTP_DISABLE_FRAGMENTS
SCTP_PEER_ADDR_PARAMS,
#define SCTP_PEER_ADDR_PARAMS SCTP_PEER_ADDR_PARAMS
SCTP_DEFAULT_SEND_PARAM,
#define SCTP_DEFAULT_SEND_PARAM SCTP_DEFAULT_SEND_PARAM
SCTP_EVENTS,
#define SCTP_EVENTS SCTP_EVENTS
SCTP_I_WANT_MAPPED_V4_ADDR, /* Turn on/off mapped v4 addresses */
#define SCTP_I_WANT_MAPPED_V4_ADDR SCTP_I_WANT_MAPPED_V4_ADDR
SCTP_MAXSEG, /* Get/set maximum fragment. */
#define SCTP_MAXSEG SCTP_MAXSEG
SCTP_STATUS,
#define SCTP_STATUS SCTP_STATUS
SCTP_GET_PEER_ADDR_INFO,
#define SCTP_GET_PEER_ADDR_INFO SCTP_GET_PEER_ADDR_INFO
SCTP_DELAYED_ACK,
#define SCTP_DELAYED_ACK_TIME SCTP_DELAYED_ACK
#define SCTP_DELAYED_ACK SCTP_DELAYED_ACK
SCTP_CONTEXT, /* Receive Context */
#define SCTP_CONTEXT SCTP_CONTEXT
SCTP_FRAGMENT_INTERLEAVE,
#define SCTP_FRAGMENT_INTERLEAVE SCTP_FRAGMENT_INTERLEAVE
SCTP_PARTIAL_DELIVERY_POINT, /* Set/Get partial delivery point */
#define SCTP_PARTIAL_DELIVERY_POINT SCTP_PARTIAL_DELIVERY_POINT
SCTP_MAX_BURST, /* Set/Get max burst */
#define SCTP_MAX_BURST SCTP_MAX_BURST
SCTP_AUTH_CHUNK, /* Set only: add a chunk type to authenticat */
#define SCTP_AUTH_CHUNK SCTP_AUTH_CHUNK
SCTP_HMAC_IDENT,
#define SCTP_HMAC_IDENT SCTP_HMAC_IDENT
SCTP_AUTH_KEY,
#define SCTP_AUTH_KEY SCTP_AUTH_KEY
SCTP_AUTH_ACTIVE_KEY,
#define SCTP_AUTH_ACTIVE_KEY SCTP_AUTH_ACTIVE_KEY
SCTP_AUTH_DELETE_KEY,
#define SCTP_AUTH_DELETE_KEY SCTP_AUTH_DELETE_KEY
SCTP_PEER_AUTH_CHUNKS, /* Read only */
#define SCTP_PEER_AUTH_CHUNKS SCTP_PEER_AUTH_CHUNKS
SCTP_LOCAL_AUTH_CHUNKS, /* Read only */
#define SCTP_LOCAL_AUTH_CHUNKS SCTP_LOCAL_AUTH_CHUNKS
SCTP_GET_ASSOC_NUMBER, /* Read only */
#define SCTP_GET_ASSOC_NUMBER SCTP_GET_ASSOC_NUMBER
/* Internal Socket Options. Some of the sctp library functions are
#define SCTP_RTOINFO 0
#define SCTP_ASSOCINFO 1
#define SCTP_INITMSG 2
#define SCTP_NODELAY 3 /* Get/set nodelay option. */
#define SCTP_AUTOCLOSE 4
#define SCTP_SET_PEER_PRIMARY_ADDR 5
#define SCTP_PRIMARY_ADDR 6
#define SCTP_ADAPTATION_LAYER 7
#define SCTP_DISABLE_FRAGMENTS 8
#define SCTP_PEER_ADDR_PARAMS 9
#define SCTP_DEFAULT_SEND_PARAM 10
#define SCTP_EVENTS 11
#define SCTP_I_WANT_MAPPED_V4_ADDR 12 /* Turn on/off mapped v4 addresses */
#define SCTP_MAXSEG 13 /* Get/set maximum fragment. */
#define SCTP_STATUS 14
#define SCTP_GET_PEER_ADDR_INFO 15
#define SCTP_DELAYED_ACK_TIME 16
#define SCTP_DELAYED_ACK SCTP_DELAYED_ACK_TIME
#define SCTP_CONTEXT 17
#define SCTP_FRAGMENT_INTERLEAVE 18
#define SCTP_PARTIAL_DELIVERY_POINT 19 /* Set/Get partial delivery point */
#define SCTP_MAX_BURST 20 /* Set/Get max burst */
#define SCTP_AUTH_CHUNK 21 /* Set only: add a chunk type to authenticate */
#define SCTP_HMAC_IDENT 22
#define SCTP_AUTH_KEY 23
#define SCTP_AUTH_ACTIVE_KEY 24
#define SCTP_AUTH_DELETE_KEY 25
#define SCTP_PEER_AUTH_CHUNKS 26 /* Read only */
#define SCTP_LOCAL_AUTH_CHUNKS 27 /* Read only */
#define SCTP_GET_ASSOC_NUMBER 28 /* Read only */
/* Internal Socket Options. Some of the sctp library functions are
* implemented using these socket options.
*/
SCTP_SOCKOPT_BINDX_ADD = 100,/* BINDX requests for adding addresses. */
#define SCTP_SOCKOPT_BINDX_ADD SCTP_SOCKOPT_BINDX_ADD
SCTP_SOCKOPT_BINDX_REM, /* BINDX requests for removing addresses. */
#define SCTP_SOCKOPT_BINDX_REM SCTP_SOCKOPT_BINDX_REM
SCTP_SOCKOPT_PEELOFF, /* peel off association. */
#define SCTP_SOCKOPT_PEELOFF SCTP_SOCKOPT_PEELOFF
SCTP_GET_PEER_ADDRS_NUM_OLD, /* Get number of peer addresss. */
#define SCTP_GET_PEER_ADDRS_NUM_OLD SCTP_GET_PEER_ADDRS_NUM_OLD
SCTP_GET_PEER_ADDRS_OLD, /* Get all peer addresss. */
#define SCTP_GET_PEER_ADDRS_OLD SCTP_GET_PEER_ADDRS_OLD
SCTP_GET_LOCAL_ADDRS_NUM_OLD, /* Get number of local addresss. */
#define SCTP_GET_LOCAL_ADDRS_NUM_OLD SCTP_GET_LOCAL_ADDRS_NUM_OLD
SCTP_GET_LOCAL_ADDRS_OLD, /* Get all local addresss. */
#define SCTP_GET_LOCAL_ADDRS_OLD SCTP_GET_LOCAL_ADDRS_OLD
SCTP_SOCKOPT_CONNECTX_OLD, /* CONNECTX old requests. */
#define SCTP_SOCKOPT_CONNECTX_OLD SCTP_SOCKOPT_CONNECTX_OLD
SCTP_GET_PEER_ADDRS, /* Get all peer addresss. */
#define SCTP_GET_PEER_ADDRS SCTP_GET_PEER_ADDRS
SCTP_GET_LOCAL_ADDRS, /* Get all local addresss. */
#define SCTP_GET_LOCAL_ADDRS SCTP_GET_LOCAL_ADDRS
SCTP_SOCKOPT_CONNECTX, /* CONNECTX requests. */
#define SCTP_SOCKOPT_CONNECTX SCTP_SOCKOPT_CONNECTX
SCTP_SOCKOPT_CONNECTX3, /* CONNECTX requests. (new implementation) */
#define SCTP_SOCKOPT_CONNECTX3 SCTP_SOCKOPT_CONNECTX3
};
#define SCTP_SOCKOPT_BINDX_ADD 100 /* BINDX requests for adding addrs */
#define SCTP_SOCKOPT_BINDX_REM 101 /* BINDX requests for removing addrs. */
#define SCTP_SOCKOPT_PEELOFF 102 /* peel off association. */
/* Options 104-106 are deprecated and removed. Do not use this space */
#define SCTP_SOCKOPT_CONNECTX_OLD 107 /* CONNECTX old requests. */
#define SCTP_GET_PEER_ADDRS 108 /* Get all peer addresss. */
#define SCTP_GET_LOCAL_ADDRS 109 /* Get all local addresss. */
#define SCTP_SOCKOPT_CONNECTX 110 /* CONNECTX requests. */
#define SCTP_SOCKOPT_CONNECTX3 111 /* CONNECTX requests (updated) */
/*
* 5.2.1 SCTP Initiation Structure (SCTP_INIT)
......@@ -206,6 +159,7 @@ enum sctp_sinfo_flags {
SCTP_UNORDERED = 1, /* Send/receive message unordered. */
SCTP_ADDR_OVER = 2, /* Override the primary destination. */
SCTP_ABORT=4, /* Send an ABORT message to the peer. */
SCTP_SACK_IMMEDIATELY = 8, /* SACK should be sent without delay */
SCTP_EOF=MSG_FIN, /* Initiate graceful shutdown process. */
};
......
net/sctp/associola.c
View file @ 5656b6ca
......@@ -63,6 +63,12 @@
static void sctp_assoc_bh_rcv(struct work_struct *work);
static void sctp_assoc_free_asconf_acks(struct sctp_association *asoc);
/* Keep track of the new idr low so that we don't re-use association id
* numbers too fast. It is protected by they idr spin lock is in the
* range of 1 - INT_MAX.
*/
static u32 idr_low = 1;
/* 1st Level Abstractions. */
......@@ -167,7 +173,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
asoc->timeouts[SCTP_EVENT_TIMEOUT_HEARTBEAT] = 0;
asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] = asoc->sackdelay;
asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE] =
sp->autoclose * HZ;
(unsigned long)sp->autoclose * HZ;
/* Initilizes the timers */
for (i = SCTP_EVENT_TIMEOUT_NONE; i < SCTP_NUM_TIMEOUT_TYPES; ++i)
......@@ -512,7 +518,13 @@ void sctp_assoc_set_primary(struct sctp_association *asoc,
* to this destination address earlier. The sender MUST set
* CYCLING_CHANGEOVER to indicate that this switch is a
* double switch to the same destination address.
*
* Really, only bother is we have data queued or outstanding on
* the association.
*/
if (!asoc->outqueue.outstanding_bytes && !asoc->outqueue.out_qlen)
return;
if (transport->cacc.changeover_active)
transport->cacc.cycling_changeover = changeover;
......@@ -732,6 +744,7 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
peer->partial_bytes_acked = 0;
peer->flight_size = 0;
peer->burst_limited = 0;
/* Set the transport's RTO.initial value */
peer->rto = asoc->rto_initial;
......@@ -1377,8 +1390,9 @@ static inline int sctp_peer_needs_update(struct sctp_association *asoc)
case SCTP_STATE_SHUTDOWN_RECEIVED:
case SCTP_STATE_SHUTDOWN_SENT:
if ((asoc->rwnd > asoc->a_rwnd) &&
((asoc->rwnd - asoc->a_rwnd) >=
min_t(__u32, (asoc->base.sk->sk_rcvbuf >> 1), asoc->pathmtu)))
((asoc->rwnd - asoc->a_rwnd) >= max_t(__u32,
(asoc->base.sk->sk_rcvbuf >> sctp_rwnd_upd_shift),
asoc->pathmtu)))
return 1;
break;
default:
......@@ -1545,7 +1559,12 @@ int sctp_assoc_set_id(struct sctp_association *asoc, gfp_t gfp)
spin_lock_bh(&sctp_assocs_id_lock);
error = idr_get_new_above(&sctp_assocs_id, (void *)asoc,
1, &assoc_id);
idr_low, &assoc_id);
if (!error) {
idr_low = assoc_id + 1;
if (idr_low == INT_MAX)
idr_low = 1;
}
spin_unlock_bh(&sctp_assocs_id_lock);
if (error == -EAGAIN)
goto retry;
......
net/sctp/chunk.c
View file @ 5656b6ca
......@@ -263,9 +263,18 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
if (0 == i)
frag |= SCTP_DATA_FIRST_FRAG;
if ((i == (whole - 1)) && !over)
if ((i == (whole - 1)) && !over) {
frag |= SCTP_DATA_LAST_FRAG;
/* The application requests to set the I-bit of the
* last DATA chunk of a user message when providing
* the user message to the SCTP implementation.
*/
if ((sinfo->sinfo_flags & SCTP_EOF) ||
(sinfo->sinfo_flags & SCTP_SACK_IMMEDIATELY))
frag |= SCTP_DATA_SACK_IMM;
}
chunk = sctp_make_datafrag_empty(asoc, sinfo, len, frag, 0);
if (!chunk)
......@@ -297,6 +306,10 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
else
frag = SCTP_DATA_LAST_FRAG;
if ((sinfo->sinfo_flags & SCTP_EOF) ||
(sinfo->sinfo_flags & SCTP_SACK_IMMEDIATELY))
frag |= SCTP_DATA_SACK_IMM;
chunk = sctp_make_datafrag_empty(asoc, sinfo, over, frag, 0);
if (!chunk)
......
net/sctp/output.c
View file @ 5656b6ca
......@@ -429,9 +429,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
list_del_init(&chunk->list);
if (sctp_chunk_is_data(chunk)) {
if (!chunk->has_tsn) {
sctp_chunk_assign_ssn(chunk);
sctp_chunk_assign_tsn(chunk);
if (!chunk->resent) {
/* 6.3.1 C4) When data is in flight and when allowed
* by rule C5, a new RTT measurement MUST be made each
......@@ -444,7 +442,8 @@ int sctp_packet_transmit(struct sctp_packet *packet)
chunk->rtt_in_progress = 1;
tp->rto_pending = 1;
}
} else
}
chunk->resent = 1;
has_data = 1;
......@@ -557,8 +556,6 @@ int sctp_packet_transmit(struct sctp_packet *packet)
struct timer_list *timer;
unsigned long timeout;
tp->last_time_used = jiffies;
/* Restart the AUTOCLOSE timer when sending data. */
if (sctp_state(asoc, ESTABLISHED) && asoc->autoclose) {
timer = &asoc->timers[SCTP_EVENT_TIMEOUT_AUTOCLOSE];
......@@ -617,7 +614,6 @@ static sctp_xmit_t sctp_packet_can_append_data(struct sctp_packet *packet,
sctp_xmit_t retval = SCTP_XMIT_OK;
size_t datasize, rwnd, inflight, flight_size;
struct sctp_transport *transport = packet->transport;
__u32 max_burst_bytes;
struct sctp_association *asoc = transport->asoc;
struct sctp_outq *q = &asoc->outqueue;
......@@ -650,28 +646,6 @@ static sctp_xmit_t sctp_packet_can_append_data(struct sctp_packet *packet,
}
}
/* sctpimpguide-05 2.14.2
* D) When the time comes for the sender to
* transmit new DATA chunks, the protocol parameter Max.Burst MUST
* first be applied to limit how many new DATA chunks may be sent.
* The limit is applied by adjusting cwnd as follows:
* if ((flightsize + Max.Burst * MTU) < cwnd)
* cwnd = flightsize + Max.Burst * MTU
*/
max_burst_bytes = asoc->max_burst * asoc->pathmtu;
if ((flight_size + max_burst_bytes) < transport->cwnd) {
transport->cwnd = flight_size + max_burst_bytes;
SCTP_DEBUG_PRINTK("%s: cwnd limited by max_burst: "
"transport: %p, cwnd: %d, "
"ssthresh: %d, flight_size: %d, "
"pba: %d\n",
__func__, transport,
transport->cwnd,
transport->ssthresh,
transport->flight_size,
transport->partial_bytes_acked);
}
/* RFC 2960 6.1 Transmission of DATA Chunks
*
* B) At any given time, the sender MUST NOT transmit new data
......@@ -747,6 +721,8 @@ static void sctp_packet_append_data(struct sctp_packet *packet,
/* Has been accepted for transmission. */
if (!asoc->peer.prsctp_capable)
chunk->msg->can_abandon = 0;
sctp_chunk_assign_tsn(chunk);
sctp_chunk_assign_ssn(chunk);
}
static sctp_xmit_t sctp_packet_will_fit(struct sctp_packet *packet,
......
net/sctp/outqueue.c
View file @ 5656b6ca
......@@ -931,6 +931,14 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
goto sctp_flush_out;
}
/* Apply Max.Burst limitation to the current transport in
* case it will be used for new data. We are going to
* rest it before we return, but we want to apply the limit
* to the currently queued data.
*/
if (transport)
sctp_transport_burst_limited(transport);
/* Finally, transmit new packets. */
while ((chunk = sctp_outq_dequeue_data(q)) != NULL) {
/* RFC 2960 6.5 Every DATA chunk MUST carry a valid
......@@ -976,6 +984,10 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
packet = &transport->packet;
sctp_packet_config(packet, vtag,
asoc->peer.ecn_capable);
/* We've switched transports, so apply the
* Burst limit to the new transport.
*/
sctp_transport_burst_limited(transport);
}
SCTP_DEBUG_PRINTK("sctp_outq_flush(%p, %p[%s]), ",
......@@ -1011,6 +1023,13 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
break;
case SCTP_XMIT_OK:
/* The sender is in the SHUTDOWN-PENDING state,
* The sender MAY set the I-bit in the DATA
* chunk header.
*/
if (asoc->state == SCTP_STATE_SHUTDOWN_PENDING)
chunk->chunk_hdr->flags |= SCTP_DATA_SACK_IMM;
break;
default:
......@@ -1063,6 +1082,9 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
packet = &t->packet;
if (!sctp_packet_empty(packet))
error = sctp_packet_transmit(packet);
/* Clear the burst limited state, if any */
sctp_transport_burst_reset(t);
}
return error;
......
net/sctp/protocol.c
View file @ 5656b6ca
......@@ -1258,6 +1258,9 @@ SCTP_STATIC __init int sctp_init(void)
/* Set SCOPE policy to enabled */
sctp_scope_policy = SCTP_SCOPE_POLICY_ENABLE;
/* Set the default rwnd update threshold */
sctp_rwnd_upd_shift = SCTP_DEFAULT_RWND_SHIFT;
sctp_sysctl_register();
INIT_LIST_HEAD(&sctp_address_families);
......
net/sctp/sm_make_chunk.c
View file @ 5656b6ca
......@@ -987,7 +987,10 @@ static void *sctp_addto_param(struct sctp_chunk *chunk, int len,
target = skb_put(chunk->skb, len);
if (data)
memcpy(target, data, len);
else
memset(target, 0, len);
/* Adjust the chunk length field. */
chunk->chunk_hdr->length = htons(chunklen + len);
......@@ -1129,16 +1132,18 @@ static struct sctp_chunk *sctp_make_op_error_space(
struct sctp_chunk *sctp_make_op_error(const struct sctp_association *asoc,
const struct sctp_chunk *chunk,
__be16 cause_code, const void *payload,
size_t paylen)
size_t paylen, size_t reserve_tail)
{
struct sctp_chunk *retval;
retval = sctp_make_op_error_space(asoc, chunk, paylen);
retval = sctp_make_op_error_space(asoc, chunk, paylen + reserve_tail);
if (!retval)
goto nodata;
sctp_init_cause(retval, cause_code, paylen);
sctp_init_cause(retval, cause_code, paylen + reserve_tail);
sctp_addto_chunk(retval, paylen, payload);
if (reserve_tail)
sctp_addto_param(retval, reserve_tail, NULL);
nodata:
return retval;
......
net/sctp/sm_sideeffect.c
View file @ 5656b6ca
......@@ -217,7 +217,6 @@ static int sctp_gen_sack(struct sctp_association *asoc, int force,
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
SCTP_TO(SCTP_EVENT_TIMEOUT_SACK));
} else {
if (asoc->a_rwnd > asoc->rwnd)
asoc->a_rwnd = asoc->rwnd;
sack = sctp_make_sack(asoc);
if (!sack)
......@@ -1418,6 +1417,8 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
asoc->init_last_sent_to = t;
chunk->transport = t;
t->init_sent_count++;
/* Set the new transport as primary */
sctp_assoc_set_primary(asoc, t);
break;
case SCTP_CMD_INIT_RESTART:
......
net/sctp/sm_statefuns.c
View file @ 5656b6ca
......@@ -996,14 +996,15 @@ sctp_disposition_t sctp_sf_sendbeat_8_3(const struct sctp_endpoint *ep,
sctp_sf_heartbeat(ep, asoc, type, arg,
commands))
return SCTP_DISPOSITION_NOMEM;
/* Set transport error counter and association error counter
* when sending heartbeat.
*/
sctp_add_cmd_sf(commands, SCTP_CMD_TRANSPORT_IDLE,
SCTP_TRANSPORT(transport));
sctp_add_cmd_sf(commands, SCTP_CMD_TRANSPORT_HB_SENT,
SCTP_TRANSPORT(transport));
}
sctp_add_cmd_sf(commands, SCTP_CMD_TRANSPORT_IDLE,
SCTP_TRANSPORT(transport));
sctp_add_cmd_sf(commands, SCTP_CMD_HB_TIMER_UPDATE,
SCTP_TRANSPORT(transport));
......@@ -1720,7 +1721,7 @@ static sctp_disposition_t sctp_sf_do_dupcook_a(const struct sctp_endpoint *ep,
err = sctp_make_op_error(asoc, chunk,
SCTP_ERROR_COOKIE_IN_SHUTDOWN,
NULL, 0);
NULL, 0, 0);
if (err)
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
SCTP_CHUNK(err));
......@@ -2868,6 +2869,7 @@ sctp_disposition_t sctp_sf_eat_data_6_2(const struct sctp_endpoint *ep,
sctp_cmd_seq_t *commands)
{
struct sctp_chunk *chunk = arg;
sctp_arg_t force = SCTP_NOFORCE();
int error;
if (!sctp_vtag_verify(chunk, asoc)) {
......@@ -2901,6 +2903,9 @@ sctp_disposition_t sctp_sf_eat_data_6_2(const struct sctp_endpoint *ep,
BUG();
}
if (chunk->chunk_hdr->flags & SCTP_DATA_SACK_IMM)
force = SCTP_FORCE();
if (asoc->autoclose) {
sctp_add_cmd_sf(commands, SCTP_CMD_TIMER_RESTART,
SCTP_TO(SCTP_EVENT_TIMEOUT_AUTOCLOSE));
......@@ -2929,7 +2934,7 @@ sctp_disposition_t sctp_sf_eat_data_6_2(const struct sctp_endpoint *ep,
* more aggressive than the following algorithms allow.
*/
if (chunk->end_of_packet)
sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, SCTP_NOFORCE());
sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, force);
return SCTP_DISPOSITION_CONSUME;
......@@ -2954,7 +2959,7 @@ sctp_disposition_t sctp_sf_eat_data_6_2(const struct sctp_endpoint *ep,
discard_noforce:
if (chunk->end_of_packet)
sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, SCTP_NOFORCE());
sctp_add_cmd_sf(commands, SCTP_CMD_GEN_SACK, force);
return SCTP_DISPOSITION_DISCARD;
consume:
......@@ -3973,7 +3978,7 @@ sctp_disposition_t sctp_sf_eat_auth(const struct sctp_endpoint *ep,
err_chunk = sctp_make_op_error(asoc, chunk,
SCTP_ERROR_UNSUP_HMAC,
&auth_hdr->hmac_id,
sizeof(__u16));
sizeof(__u16), 0);
if (err_chunk) {
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
SCTP_CHUNK(err_chunk));
......@@ -4065,7 +4070,8 @@ sctp_disposition_t sctp_sf_unk_chunk(const struct sctp_endpoint *ep,
hdr = unk_chunk->chunk_hdr;
err_chunk = sctp_make_op_error(asoc, unk_chunk,
SCTP_ERROR_UNKNOWN_CHUNK, hdr,
WORD_ROUND(ntohs(hdr->length)));
WORD_ROUND(ntohs(hdr->length)),
0);
if (err_chunk) {
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
SCTP_CHUNK(err_chunk));
......@@ -4084,7 +4090,8 @@ sctp_disposition_t sctp_sf_unk_chunk(const struct sctp_endpoint *ep,
hdr = unk_chunk->chunk_hdr;
err_chunk = sctp_make_op_error(asoc, unk_chunk,
SCTP_ERROR_UNKNOWN_CHUNK, hdr,
WORD_ROUND(ntohs(hdr->length)));
WORD_ROUND(ntohs(hdr->length)),
0);
if (err_chunk) {
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
SCTP_CHUNK(err_chunk));
......@@ -6048,7 +6055,8 @@ static int sctp_eat_data(const struct sctp_association *asoc,
err = sctp_make_op_error(asoc, chunk, SCTP_ERROR_INV_STRM,
&data_hdr->stream,
sizeof(data_hdr->stream));
sizeof(data_hdr->stream),
sizeof(u16));
if (err)
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
SCTP_CHUNK(err));
......
net/sctp/socket.c
View file @ 5656b6ca
This diff is collapsed.
net/sctp/sysctl.c
View file @ 5656b6ca
......@@ -52,6 +52,7 @@ static int int_max = INT_MAX;
static int sack_timer_min = 1;
static int sack_timer_max = 500;
static int addr_scope_max = 3; /* check sctp_scope_policy_t in include/net/sctp/constants.h for max entries */
static int rwnd_scale_max = 16;
extern int sysctl_sctp_mem[3];
extern int sysctl_sctp_rmem[3];
......@@ -284,6 +285,18 @@ static ctl_table sctp_table[] = {
.extra1 = &zero,
.extra2 = &addr_scope_max,
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "rwnd_update_shift",
.data = &sctp_rwnd_upd_shift,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &one,
.extra2 = &rwnd_scale_max,
},
{ .ctl_name = 0 }
};
......
net/sctp/transport.c
View file @ 5656b6ca
......@@ -83,7 +83,6 @@ static struct sctp_transport *sctp_transport_init(struct sctp_transport *peer,
peer->fast_recovery = 0;
peer->last_time_heard = jiffies;
peer->last_time_used = jiffies;
peer->last_time_ecne_reduced = jiffies;
peer->init_sent_count = 0;
......@@ -565,8 +564,6 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport,
* to be done every RTO interval, we do it every hearbeat
* interval.
*/
if (time_after(jiffies, transport->last_time_used +
transport->rto))
transport->cwnd = max(transport->cwnd/2,
4*transport->asoc->pathmtu);
break;
......@@ -579,6 +576,43 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport,
transport->cwnd, transport->ssthresh);
}
/* Apply Max.Burst limit to the congestion window:
* sctpimpguide-05 2.14.2
* D) When the time comes for the sender to
* transmit new DATA chunks, the protocol parameter Max.Burst MUST
* first be applied to limit how many new DATA chunks may be sent.
* The limit is applied by adjusting cwnd as follows:
* if ((flightsize+ Max.Burst * MTU) < cwnd)
* cwnd = flightsize + Max.Burst * MTU
*/
void sctp_transport_burst_limited(struct sctp_transport *t)
{
struct sctp_association *asoc = t->asoc;
u32 old_cwnd = t->cwnd;
u32 max_burst_bytes;
if (t->burst_limited)
return;
max_burst_bytes = t->flight_size + (asoc->max_burst * asoc->pathmtu);
if (max_burst_bytes < old_cwnd) {
t->cwnd = max_burst_bytes;
t->burst_limited = old_cwnd;
}
}
/* Restore the old cwnd congestion window, after the burst had it's
* desired effect.
*/
void sctp_transport_burst_reset(struct sctp_transport *t)
{
if (t->burst_limited) {
t->cwnd = t->burst_limited;
t->burst_limited = 0;
}
}
/* What is the next timeout value for this transport? */
unsigned long sctp_transport_timeout(struct sctp_transport *t)
{
......@@ -601,6 +635,7 @@ void sctp_transport_reset(struct sctp_transport *t)
* (see Section 6.2.1)
*/
t->cwnd = min(4*asoc->pathmtu, max_t(__u32, 2*asoc->pathmtu, 4380));
t->burst_limited = 0;
t->ssthresh = asoc->peer.i.a_rwnd;
t->last_rto = t->rto = asoc->rto_initial;
t->rtt = 0;
......
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