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CLEANUP: quic: add comments on CID code

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Add minor comment to explain how the CID are stored in the QUIC
connection.
This commit is contained in:
Amaury Denoyelle 2021-11-24 15:29:53 +01:00
parent aff4ec86eb
commit 42b9f1c6dd
3 changed files with 7 additions and 5 deletions
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9
include/haproxy/xprt_quic-t.h
View File

@ -246,7 +246,8 @@ extern struct pool_head *pool_head_quic_rx_packet;
extern struct pool_head *pool_head_quic_tx_packet;
extern struct pool_head *pool_head_quic_frame;
/*
/* QUIC connection id data.
*
* This struct is used by ebmb_node structs as last member of flexible arrays.
* So do not change the order of the member of quic_cid struct.
* <data> member must be the first one.
@ -627,10 +628,10 @@ struct quic_conn {
struct ebmb_node odcid_node;
struct quic_cid odcid;
struct quic_cid dcid;
struct quic_cid dcid; /* DCID of our endpoint - not updated whan a new DCID is used */
struct ebmb_node scid_node;
struct quic_cid scid;
struct eb_root cids;
struct quic_cid scid; /* first SCID of our endpoint - not updated when a new SCID is used */
struct eb_root cids; /* tree of quic_connection_id - used to match a received packet DCID with a connection */
struct quic_enc_level els[QUIC_TLS_ENC_LEVEL_MAX];
struct quic_pktns pktns[QUIC_TLS_PKTNS_MAX];

1
include/haproxy/xprt_quic.h
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@ -181,6 +181,7 @@ static inline struct quic_connection_id *new_quic_cid(struct eb_root *root,
cid->seq_num.key = seq_num;
cid->retire_prior_to = 0;
/* insert the allocated CID in the quic_conn tree */
eb64_insert(root, &cid->seq_num);
return cid;

2
src/xprt_quic.c
View File

@ -3076,7 +3076,7 @@ static struct quic_conn *qc_new_conn(unsigned int version, int ipv4,
if (qc->odcid.len)
memcpy(qc->odcid.data, dcid, dcid_len);
/* Copy the SCID as our DCID for this connection. */
/* copy the packet SCID to reuse it as DCID for sending */
if (scid_len)
memcpy(qc->dcid.data, scid, scid_len);
qc->dcid.len = scid_len;