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authorWillem de Bruijn <willemb@google.com>2019-09-11 21:50:51 +0200
committerDavid S. Miller <davem@davemloft.net>2019-09-13 21:44:19 +0200
commitc6af0c227a22bb6bb8ff72f043e0fb6d99fd6515 (patch)
tree12f4f3b38877b029a5342e2a8f63d8131dad9b27 /include/net
parentPTP: add support for one-shot output (diff)
downloadlinux-c6af0c227a22bb6bb8ff72f043e0fb6d99fd6515.tar.xz
linux-c6af0c227a22bb6bb8ff72f043e0fb6d99fd6515.zip
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 <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/inet_sock.h1
-rw-r--r--include/net/ip.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h
index 7769c9b36d75..34c4436fd18f 100644
--- a/include/net/inet_sock.h
+++ b/include/net/inet_sock.h
@@ -160,6 +160,7 @@ struct inet_cork {
char priority;
__u16 gso_size;
u64 transmit_time;
+ u32 mark;
};
struct inet_cork_full {
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;