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flow, tcp: Generalise connection types

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Currently TCP connections use a 1-bit selector, 'spliced', to determine the
rest of the contents of the structure.  We want to generalise the TCP
connection table to other types of flows in other protocols.  Make a start
on this by replacing the tcp_conn_common structure with a new flow_common
structure with an enum rather than a simple boolean indicating the type of
flow.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
David Gibson
2023-11-30 13:02:08 +11:00
committed by Stefano Brivio
parent ba84a3b17a
commit 16ae032608
6 changed files with 112 additions and 40 deletions
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3
tcp_splice.c
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@@ -54,6 +54,7 @@
#include "tcp_splice.h"
#include "siphash.h"
#include "inany.h"
#include "flow.h"
#include "tcp_conn.h"
@@ -476,7 +477,7 @@ bool tcp_splice_conn_from_sock(const struct ctx *c,
if (setsockopt(s, SOL_TCP, TCP_QUICKACK, &((int){ 1 }), sizeof(int)))
trace("TCP (spliced): failed to set TCP_QUICKACK on %i", s);
conn->c.spliced = true;
conn->f.type = FLOW_TCP_SPLICE;
conn->s[0] = s;
if (tcp_splice_new(c, conn, ref.port, ref.pif))