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[v3,net-next,2/4] ipv4: Use per-netns hash table in inet_lookup_ifaddr_rcu().

Message ID 20241008172906.1326-3-kuniyu@amazon.com (mailing list archive)
State Accepted
Commit 49e613194292ff7750a3f889cd2db012da16f68e
Delegated to: Netdev Maintainers
Headers show
Series ipv4: Namespacify IPv4 address hash table. | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 6 this patch: 6
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 6 this patch: 6
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 5 this patch: 5
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 11 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 1 this patch: 1
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-10-10--03-00 (tests: 773)

Commit Message

Kuniyuki Iwashima Oct. 8, 2024, 5:29 p.m. UTC 
Now, all IPv4 addresses are put in the per-netns hash table.

Let's use it in inet_lookup_ifaddr_rcu().

Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
---
 net/ipv4/devinet.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
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Patch

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 059807a627a6..cf47b5ac061f 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -188,9 +188,8 @@  struct in_ifaddr *inet_lookup_ifaddr_rcu(struct net *net, __be32 addr)
 	u32 hash = inet_addr_hash(net, addr);
 	struct in_ifaddr *ifa;
 
-	hlist_for_each_entry_rcu(ifa, &inet_addr_lst[hash], hash)
-		if (ifa->ifa_local == addr &&
-		    net_eq(dev_net(ifa->ifa_dev->dev), net))
+	hlist_for_each_entry_rcu(ifa, &net->ipv4.inet_addr_lst[hash], addr_lst)
+		if (ifa->ifa_local == addr)
 			return ifa;
 
 	return NULL;