diff options
| author |   Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2019-04-15 14:36:48 +0200 |
|---|---|---|
| committer | Christian Ehrhardt <christian.ehrhardt@canonical.com> | 2019-04-15 14:39:46 +0200 |
| commit | e2bea7436061ca2e7e14bfcfdc5870f2555c3965 (patch) | |
| tree | 46c62ce8f227674d6880430f9623edb4e77b9f9a /doc/guides/prog_guide/generic_receive_offload_lib.rst | |
| parent | a4f0fa29488e582ab8b5ef9db475b3d26ded690c (diff) | |
New upstream version 18.11.1
Change-Id: Ic52e74a9ed6f3ae06acea4a27357bd7153efc2a3
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Diffstat (limited to 'doc/guides/prog_guide/generic_receive_offload_lib.rst')
| -rw-r--r-- | doc/guides/prog_guide/generic_receive_offload_lib.rst | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/doc/guides/prog_guide/generic_receive_offload_lib.rst b/doc/guides/prog_guide/generic_receive_offload_lib.rst index 9c6a4d08..5b3fb91c 100644 --- a/doc/guides/prog_guide/generic_receive_offload_lib.rst +++ b/doc/guides/prog_guide/generic_receive_offload_lib.rst @@ -191,3 +191,22 @@ Header fields deciding if packets are neighbors include: ignore IPv4 ID fields for the packets whose DF bit is 1. Additionally, packets which have different value of DF bit can't be merged. + +GRO Library Limitations +----------------------- + +- GRO library uses MBUF->l2_len/l3_len/l4_len/outer_l2_len/ + outer_l3_len/packet_type to get protocol headers for the + input packet, rather than parsing the packet header. Therefore, + before call GRO APIs to merge packets, user applications + must set MBUF->l2_len/l3_len/l4_len/outer_l2_len/outer_l3_len/ + packet_type to the same values as the protocol headers of the + packet. + +- GRO library doesn't support to process the packets with IPv4 + Options or VLAN tagged. + +- GRO library just supports to process the packet organized + in a single MBUF. If the input packet consists of multiple + MBUFs (i.e. chained MBUFs), GRO reassembly behaviors are + unknown. |