search for: flow_key

...hdr.network = skb_network_header(skb); > + > + /* Only IPv4/IPv6 with TCP is supported */ Oh well, yet another packet flow dissector :) If most packets were caught by your implementation, you could use it for fast patj and fallback to skb_flow_dissect() for encapsulated traffic. struct flow_keys keys; if (!skb_flow_dissect(skb, &keys)) return false; if (keys.ip_proto != IPPROTO_TCP) return false; then check __skb_get_poff() how to get th, and check if there is some payload... > + if ((skb->protocol == htons(ETH_P_IP)) && > + hdr.ipv4->protocol =...

We free transmitted packets in ndo_start_xmit() in the past to get better performance in the past. One side effect is that skb_orphan() needs to be called in ndo_start_xmit() which makes sk_wmem_alloc not accurate in fact. For TCP protocol, this means several optimization could not work well such as TCP small queue and auto corking. This can lead extra low throughput of small packets stream.

We free transmitted packets in ndo_start_xmit() in the past to get better performance in the past. One side effect is that skb_orphan() needs to be called in ndo_start_xmit() which makes sk_wmem_alloc not accurate in fact. For TCP protocol, this means several optimization could not work well such as TCP small queue and auto corking. This can lead extra low throughput of small packets stream.

Hello all: We free old transmitted packets in ndo_start_xmit() currently, so any packet must be orphaned also there. This was used to reduce the overhead of tx interrupt to achieve better performance. But this may not work for some protocols such as TCP stream. TCP depends on the value of sk_wmem_alloc to implement various optimization for small packets stream such as TCP small queue and auto

Hello all: We free old transmitted packets in ndo_start_xmit() currently, so any packet must be orphaned also there. This was used to reduce the overhead of tx interrupt to achieve better performance. But this may not work for some protocols such as TCP stream. TCP depends on the value of sk_wmem_alloc to implement various optimization for small packets stream such as TCP small queue and auto