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authorThomas Graf <tgraf@suug.ch>2005-06-23 23:59:51 -0400
committerDavid S. Miller <davem@davemloft.net>2005-06-23 23:59:51 -0400
commit677e90eda3bd8cfde0b748daaa46476162a03950 (patch)
tree4b40614cf9cd125883d0430467be9172997ca184 /lib/kobject_uevent.c
parent6408f79cce401e1bfecf923e7156f84f96e021e3 (diff)
[NET]: Zerocopy sequential reading of skb data
Implements sequential reading for both linear and non-linear skb data at zerocopy cost. The data is returned in chunks of arbitary length, therefore random access is not possible. Usage: from := 0 to := 128 state := undef data := undef len := undef consumed := 0 skb_prepare_seq_read(skb, from, to, &state) while (len = skb_seq_read(consumed, &data, &state)) != 0 do /* do something with 'data' of length 'len' */ if abort then /* abort read if we don't wait for * skb_seq_read() to return 0 */ skb_abort_seq_read(&state) return endif /* not necessary to consume all of 'len' */ consumed += len done Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib/kobject_uevent.c')
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