diff options
| author | Eric Biggers <ebiggers@google.com> | 2025-05-19 10:50:03 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-05-21 15:39:58 -0700 |
| commit | 55d22ee0358597185f8f5272558ec7cf1a49eb41 (patch) | |
| tree | 6d3f0cd2bc45a590a39145c70fca091be924564f | |
| parent | 51ebe6b14f669019a9e59e315d7c460065468f8e (diff) | |
net: introduce CONFIG_NET_CRC32C
Add a hidden kconfig symbol NET_CRC32C that will group together the
functions that calculate CRC32C checksums of packets, so that these
don't have to be built into NET-enabled kernels that don't need them.
Make skb_crc32c_csum_help() (which is called only when IP_SCTP is
enabled) conditional on this symbol, and make IP_SCTP select it.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://patch.msgid.link/20250519175012.36581-2-ebiggers@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/Kconfig | 4 | ||||
| -rw-r--r-- | net/core/dev.c | 2 | ||||
| -rw-r--r-- | net/sctp/Kconfig | 1 |
3 files changed, 7 insertions, 0 deletions
diff --git a/net/Kconfig b/net/Kconfig index 202cc595e5e6..5b71a52987d3 100644 --- a/net/Kconfig +++ b/net/Kconfig @@ -75,6 +75,10 @@ config NET_DEVMEM config NET_SHAPER bool +config NET_CRC32C + bool + select CRC32 + menu "Networking options" source "net/packet/Kconfig" diff --git a/net/core/dev.c b/net/core/dev.c index 6d1a238dd440..c27607b7f8b0 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3596,6 +3596,7 @@ out: } EXPORT_SYMBOL(skb_checksum_help); +#ifdef CONFIG_NET_CRC32C int skb_crc32c_csum_help(struct sk_buff *skb) { __le32 crc32c_csum; @@ -3635,6 +3636,7 @@ out: return ret; } EXPORT_SYMBOL(skb_crc32c_csum_help); +#endif /* CONFIG_NET_CRC32C */ __be16 skb_network_protocol(struct sk_buff *skb, int *depth) { diff --git a/net/sctp/Kconfig b/net/sctp/Kconfig index d18a72df3654..3669ba351856 100644 --- a/net/sctp/Kconfig +++ b/net/sctp/Kconfig @@ -11,6 +11,7 @@ menuconfig IP_SCTP select CRYPTO select CRYPTO_HMAC select CRYPTO_SHA1 + select NET_CRC32C select NET_UDP_TUNNEL help Stream Control Transmission Protocol |