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| author | Eric Dumazet <edumazet@google.com> | 2022-02-04 20:56:14 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-02-05 15:34:47 +0000 |
| commit | 5a8fb33e530512ee67a11b30f3451a4f030f4b01 (patch) | |
| tree | 5cfef7703978a16f1d0720a3fd47f883f90569ae /net/core/filter.c | |
| parent | d2692eee05b8502dbe4c480405feec79f4efbb55 (diff) | |
| download | linux-5a8fb33e530512ee67a11b30f3451a4f030f4b01.tar.gz linux-5a8fb33e530512ee67a11b30f3451a4f030f4b01.tar.bz2 linux-5a8fb33e530512ee67a11b30f3451a4f030f4b01.zip | |
skmsg: convert struct sk_msg_sg::copy to a bitmap
We have plans for increasing MAX_SKB_FRAGS, but sk_msg_sg::copy
is currently an unsigned long, limiting MAX_SKB_FRAGS to 30 on 32bit arches.
Convert it to a bitmap, as Jakub suggested.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/filter.c')
| -rw-r--r-- | net/core/filter.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index 9615ae1ab530..f497ca7a16d2 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2603,7 +2603,7 @@ BPF_CALL_4(bpf_msg_pull_data, struct sk_msg *, msg, u32, start, * account for the headroom. */ bytes_sg_total = start - offset + bytes; - if (!test_bit(i, &msg->sg.copy) && bytes_sg_total <= len) + if (!test_bit(i, msg->sg.copy) && bytes_sg_total <= len) goto out; /* At this point we need to linearize multiple scatterlist @@ -2809,7 +2809,7 @@ BPF_CALL_4(bpf_msg_push_data, struct sk_msg *, msg, u32, start, /* Place newly allocated data buffer */ sk_mem_charge(msg->sk, len); msg->sg.size += len; - __clear_bit(new, &msg->sg.copy); + __clear_bit(new, msg->sg.copy); sg_set_page(&msg->sg.data[new], page, len + copy, 0); if (rsge.length) { get_page(sg_page(&rsge)); |