diff options
| author | Daniel Borkmann <dborkman@redhat.com> | 2013-08-29 18:54:49 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-09-03 21:44:11 -0400 |
| commit | b1b72076b90d631637497b35e36bc64254df199d (patch) | |
| tree | 1e07ffae2509e6e53ab2f4f59a2bfdd00707c394 | |
| parent | 3e25c65ed085b361cc91a8f02e028f1158c9f255 (diff) | |
net: sctp: probe: allow more advanced ingress filtering by mark
This is a follow-up commit for commit b1dcdc68b1f4 ("net: tcp_probe:
allow more advanced ingress filtering by mark") that allows for
advanced SCTP probe module filtering based on skb mark (for a more
detailed description and advantages using mark, refer to b1dcdc68b1f4).
The current option to filter by a given port is still being preserved.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/sctp/probe.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/net/sctp/probe.c b/net/sctp/probe.c index cd72ae57aff..53c452efb40 100644 --- a/net/sctp/probe.c +++ b/net/sctp/probe.c @@ -46,6 +46,10 @@ static int port __read_mostly = 0; MODULE_PARM_DESC(port, "Port to match (0=all)"); module_param(port, int, 0); +static unsigned int fwmark __read_mostly = 0; +MODULE_PARM_DESC(fwmark, "skb mark to match (0=no mark)"); +module_param(fwmark, uint, 0); + static int bufsize __read_mostly = 64 * 1024; MODULE_PARM_DESC(bufsize, "Log buffer size (default 64k)"); module_param(bufsize, int, 0); @@ -129,15 +133,19 @@ static sctp_disposition_t jsctp_sf_eat_sack(struct net *net, void *arg, sctp_cmd_seq_t *commands) { + struct sctp_chunk *chunk = arg; + struct sk_buff *skb = chunk->skb; struct sctp_transport *sp; static __u32 lcwnd = 0; struct timespec now; sp = asoc->peer.primary_path; - if ((full || sp->cwnd != lcwnd) && - (!port || asoc->peer.port == port || - ep->base.bind_addr.port == port)) { + if (((port == 0 && fwmark == 0) || + asoc->peer.port == port || + ep->base.bind_addr.port == port || + (fwmark > 0 && skb->mark == fwmark)) && + (full || sp->cwnd != lcwnd)) { lcwnd = sp->cwnd; getnstimeofday(&now); @@ -198,8 +206,8 @@ static __init int sctpprobe_init(void) if (ret) goto remove_proc; - pr_info("probe registered (port=%d)\n", port); - + pr_info("probe registered (port=%d/fwmark=%u) bufsize=%u\n", + port, fwmark, bufsize); return 0; remove_proc: |