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MINOR: stktable: Use an enum to type a sticky session in the updates tree

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Instead of using a boolean to know if an entry in the updates tree is local
or not, an enum is used. This change will be mandatory when updates tree
will be replaced by a list to be able to add markers owned by each peer.

So now a sticky sessin has no type (STKSESS_UPDT_NONE) if it is not in the
updates tree. STKSESS_UPDT_LOCAL is used for local entries and
STKSESS_UPDT_REMOTE for remote ones. STKSESS_UPDT_MARKER is not used for
now.
This commit is contained in:
Christopher Faulet 2025-10-09 11:54:56 +02:00
parent ded62e3ea4
commit 8d85f724fd
2 changed files with 14 additions and 4 deletions
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11
include/haproxy/stick_table-t.h
View File

@ -112,6 +112,15 @@ enum {
#define STKCTR_TRACK_BACKEND 1
#define STKCTR_TRACK_CONTENT 2
/* type of the sticky session in the updates tree */
enum {
STKSESS_UPDT_NONE = 0, /* unset, only if table is not used by the peers */
STKSESS_UPDT_LOCAL, /* the sticky session is locally updated */
STKSESS_UPDT_REMOTE, /* the sticky session is remotely updated */
STKSESS_UPDT_MARKER, /* not a true sticky session, only used a marker*/
};
/* stick_table extra data. This is mainly used for casting or size computation */
union stktable_data {
/* standard types for easy casting */
@ -153,7 +162,7 @@ struct stksess {
struct eb32_node exp; /* ebtree node used to hold the session in expiration tree */
struct eb32_node upd; /* ebtree node used to hold the update sequence tree */
struct mt_list pend_updts;/* list of entries to be inserted/moved in the update sequence tree */
int updt_is_local; /* is the update a local one ? */
unsigned int updt_type; /* One of STKSESS_UPDT_* value */
struct ebmb_node key; /* ebtree node used to hold the session in table */
/* WARNING! do not put anything after <keys>, it's used by the key */
};

7
src/stick_table.c
View File

@ -268,6 +268,7 @@ static struct stksess *__stksess_init(struct stktable *t, struct stksess * ts)
ts->key.node.leaf_p = NULL;
ts->exp.node.leaf_p = NULL;
ts->upd.node.leaf_p = NULL;
ts->updt_type = STKSESS_UPDT_NONE;
MT_LIST_INIT(&ts->pend_updts);
ts->expire = tick_add(now_ms, MS_TO_TICKS(t->expire));
HA_RWLOCK_INIT(&ts->lock);
@ -627,13 +628,13 @@ void stktable_touch_with_exp(struct stktable *t, struct stksess *ts, int local,
* scheduled for at least one peer.
*/
if (!ts->upd.node.leaf_p || _HA_ATOMIC_LOAD(&ts->seen)) {
_HA_ATOMIC_STORE(&ts->updt_is_local, 1);
_HA_ATOMIC_STORE(&ts->updt_type, STKSESS_UPDT_LOCAL);
did_append = MT_LIST_TRY_APPEND(&t->pend_updts[tgid - 1], &ts->pend_updts);
}
}
else {
if (!ts->upd.node.leaf_p) {
_HA_ATOMIC_STORE(&ts->updt_is_local, 0);
_HA_ATOMIC_STORE(&ts->updt_type, STKSESS_UPDT_REMOTE);
did_append = MT_LIST_TRY_APPEND(&t->pend_updts[tgid - 1], &ts->pend_updts);
}
}
@ -828,7 +829,7 @@ struct task *stktable_add_pend_updates(struct task *t, void *ctx, unsigned int s
empty_tgid = 0;
if (cur_tgid == global.nbtgroups)
cur_tgid = 0;
is_local = stksess->updt_is_local;
is_local = (stksess->updt_type == STKSESS_UPDT_LOCAL);
stksess->seen = 0;
if (is_local) {
stksess->upd.key = ++table->update;