Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

TCP: avoid stall with larger MSS #493

Open
wants to merge 2 commits into
base: main
Choose a base branch
from
+6 −2
Open

TCP: avoid stall with larger MSS #493

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
ddb302d
tcp: avoid stall with larger MSS
djs55 Oct 2, 2022
657b7c8
Directly use int32 values instead of Int32.of_int (@avsm)
dinosaure Feb 10, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Jump to
Jump to file
Failed to load files.
Diff view
Diff view
8 changes: 6 additions & 2 deletions src/tcp/flow.ml
View file
Open in desktop
Expand Up @@ -20,6 +20,9 @@ open Lwt.Infix
let src = Logs.Src.create "tcp.pcb" ~doc:"Mirage TCP PCB module"
module Log = (val Logs.src_log src : Logs.LOG)

(* MSS options are 16 bites, so the max value is 64k *)
let max_mss = Int32.mul 64l 1024l

module Make(Ip: Tcpip.Ip.S)(Time:Mirage_time.S)(Clock:Mirage_clock.MCLOCK)(Random:Mirage_random.S) =
struct

Expand Down Expand Up @@ -360,8 +363,9 @@ struct
in
(* Set up ACK module *)
let ack = ACK.t ~send_ack ~last:(Sequence.succ rx_isn) in
(* The user application transmit buffer *)
let utx = UTX.create ~wnd ~txq ~max_size:16384l in
(* The user application transmit buffer. Ensure we are always allowed to write
an MSS of data into it before `available` returns 0. *)
let utx = UTX.create ~wnd ~txq ~max_size:(Int32.mul 2l max_mss) in
let rxq = RXS.create ~rx_data ~ack ~wnd ~state ~tx_ack in
(* Set up the keepalive state if requested *)
let keepalive = match keepalive with
Expand Down