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authorSteven Luong <sluong@cisco.com>2020-02-13 09:27:38 -0800
committerDave Barach <openvpp@barachs.net>2020-02-25 22:37:44 +0000
commitf7ab7b2d9bc0f42c1e766d22d49dd0dc4f28abb6 (patch)
tree4bbea14cfb291fb5754a87c1575e65edd68d704c /src/svm
parent2da39718f560478678caacccd198ee4c0c9673c3 (diff)
avf: Handle chain buffer in TX properly
For chain buffer, need to traverse b->next_buffer to transmit all buffers in the chain. Only set EOP at the last descriptor in the chain to signal this is a chain descriptor. Introduce slow path to handle ring wrap. This is needed because chain buffer may consist of multiple pieces and it may span from near the end of the ring to the beginning of the ring. Type: fix Signed-off-by: Steven Luong <sluong@cisco.com> Change-Id: Id7c872f3e39e09f3566aa63f3cdba8f40736d508
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