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[SCTP]: Correctly set IP id for SCTP traffic

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Make SCTP 1-1 style and peeled-off associations behave like TCP when
setting IP id. In both cases, we set the inet_sk(sk)->daddr and initialize
inet_sk(sk)->id to a random value.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Yasevich 2006-10-30 18:54:32 -08:00 committed by David S. Miller
parent f8687afefc
commit 4f4443088b
2 changed files with 10 additions and 1 deletions
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2
net/sctp/protocol.c
View File

@ -591,7 +591,7 @@ static struct sock *sctp_v4_create_accept_sk(struct sock *sk,
newinet->dport = htons(asoc->peer.port);
newinet->daddr = asoc->peer.primary_addr.v4.sin_addr.s_addr;
newinet->pmtudisc = inet->pmtudisc;
newinet->id = 0;
newinet->id = asoc->next_tsn ^ jiffies;
newinet->uc_ttl = -1;
newinet->mc_loop = 1;

9
net/sctp/socket.c
View File

@ -3372,6 +3372,7 @@ SCTP_STATIC int sctp_do_peeloff(struct sctp_association *asoc,
{
struct sock *sk = asoc->base.sk;
struct socket *sock;
struct inet_sock *inetsk;
int err = 0;
/* An association cannot be branched off from an already peeled-off
@ -3389,6 +3390,14 @@ SCTP_STATIC int sctp_do_peeloff(struct sctp_association *asoc,
* asoc to the newsk.
*/
sctp_sock_migrate(sk, sock->sk, asoc, SCTP_SOCKET_UDP_HIGH_BANDWIDTH);
/* Make peeled-off sockets more like 1-1 accepted sockets.
* Set the daddr and initialize id to something more random
*/
inetsk = inet_sk(sock->sk);
inetsk->daddr = asoc->peer.primary_addr.v4.sin_addr.s_addr;
inetsk->id = asoc->next_tsn ^ jiffies;
*sockp = sock;
return err;