From: Stefano Brivio <sbrivio@redhat.com>
To: passt-dev@passt.top
Subject: [PATCH 2/3] dhcp: Introduce support for Rapid Commit (option 80, RFC 4039)
Date: Mon, 25 Nov 2024 01:04:22 +0100 [thread overview]
Message-ID: <20241125000423.4131458-3-sbrivio@redhat.com> (raw)
In-Reply-To: <20241125000423.4131458-1-sbrivio@redhat.com>
I'm trying to speed up and simplify IP address acquisition in muvm.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
---
dhcp.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/dhcp.c b/dhcp.c
index 2fe4a4d..aa0ad96 100644
--- a/dhcp.c
+++ b/dhcp.c
@@ -342,8 +342,14 @@ int dhcp(const struct ctx *c, const struct pool *p)
}
if (opts[53].c[0] == DHCPDISCOVER) {
- info("DHCP: offer to discover");
- opts[53].s[0] = DHCPOFFER;
+ if (opts[80].clen == -1) {
+ info("DHCP: offer to discover");
+ opts[53].s[0] = DHCPOFFER;
+ } else {
+ info("DHCP: ack to discover (Rapid Commit)");
+ opts[53].s[0] = DHCPACK;
+ opts[80].slen = 0;
+ }
} else if (opts[53].c[0] == DHCPREQUEST || opts[53].clen <= 0) {
info("%s: ack to request",
(opts[53].clen <= 0) ? "DHCP" : "BOOTP");
--
@@ -342,8 +342,14 @@ int dhcp(const struct ctx *c, const struct pool *p)
}
if (opts[53].c[0] == DHCPDISCOVER) {
- info("DHCP: offer to discover");
- opts[53].s[0] = DHCPOFFER;
+ if (opts[80].clen == -1) {
+ info("DHCP: offer to discover");
+ opts[53].s[0] = DHCPOFFER;
+ } else {
+ info("DHCP: ack to discover (Rapid Commit)");
+ opts[53].s[0] = DHCPACK;
+ opts[80].slen = 0;
+ }
} else if (opts[53].c[0] == DHCPREQUEST || opts[53].clen <= 0) {
info("%s: ack to request",
(opts[53].clen <= 0) ? "DHCP" : "BOOTP");
--
2.43.0
next prev parent reply other threads:[~2024-11-25 0:04 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-25 0:04 [PATCH 0/3] dhcp: Add support for Rapid Commit, broadcast replies Stefano Brivio
2024-11-25 0:04 ` [PATCH 1/3] dhcp: Use -1 as "missing option" length instead of 0 Stefano Brivio
2024-11-25 1:08 ` David Gibson
2024-11-25 8:30 ` Stefano Brivio
2024-11-25 9:18 ` David Gibson
2024-11-25 0:04 ` Stefano Brivio [this message]
2024-11-25 1:09 ` [PATCH 2/3] dhcp: Introduce support for Rapid Commit (option 80, RFC 4039) David Gibson
2024-11-25 0:04 ` [PATCH 3/3] dhcp: Honour broadcast flag (RFC 2131, 4.1) Stefano Brivio
2024-11-25 1:11 ` David Gibson
2024-11-25 8:30 ` Stefano Brivio
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