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| author | Jiri Pirko <jpirko@redhat.com> | 2012-03-31 11:01:20 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-04-03 18:36:20 -0400 |
| commit | ffe06c17afbbbd4d73cdc339419be232847d667a (patch) | |
| tree | bfe1e55c86d317d9a4412e2d7da07f837265b066 /net | |
| parent | 302d663740cfaf2c364df6bb61cd339014ed714c (diff) | |
| download | linux-ffe06c17afbbbd4d73cdc339419be232847d667a.tar.bz2 | |
filter: add XOR operation
Add XOR instruction fo BPF machine. Needed for computing packet hashes.
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/filter.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index cfbea889a0eb..5099c4b4a53f 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -315,6 +315,9 @@ load_b: case BPF_S_ANC_CPU: A = raw_smp_processor_id(); continue; + case BPF_S_ANC_ALU_XOR_X: + A ^= X; + continue; case BPF_S_ANC_NLATTR: { struct nlattr *nla; @@ -559,6 +562,7 @@ int sk_chk_filter(struct sock_filter *filter, unsigned int flen) ANCILLARY(HATYPE); ANCILLARY(RXHASH); ANCILLARY(CPU); + ANCILLARY(ALU_XOR_X); } } ftest->code = code; |