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authorAlexander Duyck2015-09-28 11:10:31 -0700
committerDavid S. Miller2015-09-29 16:27:47 -0700
commit2094acbb714e24e464c810c2d8fa57493fcb25a6 (patch)
tree6b14801f0e035ddaefe7d2601a54408d4841a266
parent0f50c10d2683fd2b8a3908c779c5f29bcb3c2174 (diff)
net/ipv4: Pass proto as u8 instead of u16 in ip_check_mc_rcu
This patch updates ip_check_mc_rcu so that protocol is passed as a u8 instead of a u16. The motivation is just to avoid any unneeded type transitions since some systems will require an instruction to zero extend a u8 field to a u16. Also it makes it a bit more readable as to the fact that protocol is a u8 so there are no byte ordering changes needed to pass it. Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/linux/igmp.h2
-rw-r--r--net/ipv4/igmp.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/igmp.h b/include/linux/igmp.h
index 908429216d9f..9c9de11549a7 100644
--- a/include/linux/igmp.h
+++ b/include/linux/igmp.h
@@ -110,7 +110,7 @@ struct ip_mc_list {
#define IGMPV3_QQIC(value) IGMPV3_EXP(0x80, 4, 3, value)
#define IGMPV3_MRC(value) IGMPV3_EXP(0x80, 4, 3, value)
-extern int ip_check_mc_rcu(struct in_device *dev, __be32 mc_addr, __be32 src_addr, u16 proto);
+extern int ip_check_mc_rcu(struct in_device *dev, __be32 mc_addr, __be32 src_addr, u8 proto);
extern int igmp_rcv(struct sk_buff *);
extern int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr);
extern int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr);
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index d38b8b61eaee..de6d4c8ba600 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -2569,7 +2569,7 @@ void ip_mc_drop_socket(struct sock *sk)
}
/* called with rcu_read_lock() */
-int ip_check_mc_rcu(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u16 proto)
+int ip_check_mc_rcu(struct in_device *in_dev, __be32 mc_addr, __be32 src_addr, u8 proto)
{
struct ip_mc_list *im;
struct ip_mc_list __rcu **mc_hash;