netfilter: nft_exthdr: remove redundant op parsing in tcp_set_init

The nft_exthdr_tcp_set_init() function is exclusively used for TCP
options. Therefore, parsing the NFTA_EXTHDR_OP attribute from user
space is redundant, as the operation type must always be
NFT_EXTHDR_OP_TCPOPT.

Remove the unnecessary netlink attribute parsing and hardcode priv->op
to NFT_EXTHDR_OP_TCPOPT, which simplifies the code and reduces the
object size.

./scripts/bloat-o-meter exthdr_before.o exthdr_after.o
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-54 (-54)
Function                                     old     new   delta
nft_exthdr_tcp_set_init                      412     358     -54
Total: Before=6581, After=6527, chg -0.82%

Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

0 files changed, 0 insertions, 0 deletions