From c6af0c227a22bb6bb8ff72f043e0fb6d99fd6515 Mon Sep 17 00:00:00 2001 From: Willem de Bruijn Date: Wed, 11 Sep 2019 15:50:51 -0400 Subject: ip: support SO_MARK cmsg Enable setting skb->mark for UDP and RAW sockets using cmsg. This is analogous to existing support for TOS, TTL, txtime, etc. Packet sockets already support this as of commit c7d39e32632e ("packet: support per-packet fwmark for af_packet sendmsg"). Similar to other fields, implement by 1. initialize the sockcm_cookie.mark from socket option sk_mark 2. optionally overwrite this in ip_cmsg_send/ip6_datagram_send_ctl 3. initialize inet_cork.mark from sockcm_cookie.mark 4. initialize each (usually just one) skb->mark from inet_cork.mark Step 1 is handled in one location for most protocols by ipcm_init_sk as of commit 351782067b6b ("ipv4: ipcm_cookie initializers"). Signed-off-by: Willem de Bruijn Signed-off-by: David S. Miller --- include/net/ip.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/net/ip.h') diff --git a/include/net/ip.h b/include/net/ip.h index 29d89de39822..95bb77f95bcc 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -88,6 +88,7 @@ static inline void ipcm_init_sk(struct ipcm_cookie *ipcm, { ipcm_init(ipcm); + ipcm->sockc.mark = inet->sk.sk_mark; ipcm->sockc.tsflags = inet->sk.sk_tsflags; ipcm->oif = inet->sk.sk_bound_dev_if; ipcm->addr = inet->inet_saddr; -- cgit v1.2.3-59-g8ed1b