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| author |   Tirthendu Sarkar <tirthendu.sarkar@intel.com> | 2023-07-19 15:23:58 +0200 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2023-07-19 09:56:48 -0700 |
| commit | 63a64a56bc3f77c74085047ee45356ac850da3e8 (patch) | |
| tree | 38b4a906c0eb73640bb4f8c0fcc811ed37b9d878 /include/net/xdp_sock.h | |
| parent | bpf, x86: initialize the variable "first_off" in save_args() (diff) | |
| download | wireguard-linux-63a64a56bc3f77c74085047ee45356ac850da3e8.tar.xz wireguard-linux-63a64a56bc3f77c74085047ee45356ac850da3e8.zip | |
xsk: prepare 'options' in xdp_desc for multi-buffer use
Use the 'options' field in xdp_desc as a packet continuity marker. Since
'options' field was unused till now and was expected to be set to 0, the
'eop' descriptor will have it set to 0, while the non-eop descriptors
will have to set it to 1. This ensures legacy applications continue to
work without needing any change for single-buffer packets.
Add helper functions and extend xskq_prod_reserve_desc() to use the
'options' field.
Signed-off-by: Tirthendu Sarkar <tirthendu.sarkar@intel.com>
Link: https://lore.kernel.org/r/20230719132421.584801-2-maciej.fijalkowski@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/net/xdp_sock.h')
0 files changed, 0 insertions, 0 deletions