From 163a339214dd34696ce485930f35ed21c86057f0 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Thu, 18 Jul 2024 15:26:34 +1000 Subject: tcp, flow: Replace TCP specific hash function with general flow hash Currently we match TCP packets received on the tap connection to a TCP connection via a hash table based on the forwarding address and both ports. We hope in future to allow for multiple guest side addresses, or for multiple interfaces which means we may need to distinguish based on the endpoint address and pif as well. We also want a unified hash table to cover multiple protocols, not just TCP. Replace the TCP specific hash function with one suitable for general flows, or rather for one side of a general flow. This includes all the information from struct flowside, plus the pif and the L4 protocol number. Signed-off-by: David Gibson Signed-off-by: Stefano Brivio --- flow_table.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'flow_table.h') diff --git a/flow_table.h b/flow_table.h index aabdbb7..b3cb546 100644 --- a/flow_table.h +++ b/flow_table.h @@ -146,4 +146,7 @@ void flow_activate(struct flow_common *f); #define FLOW_ACTIVATE(flow_) \ (flow_activate(&(flow_)->f)) +uint64_t flow_hash(const struct ctx *c, uint8_t proto, uint8_t pif, + const struct flowside *side); + #endif /* FLOW_TABLE_H */ -- cgit v1.2.3