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bgpd: Optimize memory usage for bgp_aggregate struct

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```
struct bgp_aggregate {
        uint8_t                    summary_only;         /*     0     1 */
        uint8_t                    as_set;               /*     1     1 */
        uint8_t                    origin;               /*     2     1 */
        _Bool                      med_mismatched;       /*     3     1 */
        _Bool                      med_initialized;      /*     4     1 */
        _Bool                      match_med;            /*     5     1 */

        /* XXX 2 bytes hole, try to pack */

        struct {
                char *             name;                 /*     8     8 */
                struct route_map * map;                  /*    16     8 */
        } rmap;                                          /*     8    16 */
        long unsigned int          count;                /*    24     8 */
        long unsigned int          incomplete_origin_count; /*    32     8 */
        long unsigned int          egp_origin_count;     /*    40     8 */
        struct hash *              community_hash;       /*    48     8 */
        struct hash *              ecommunity_hash;      /*    56     8 */
        /* --- cacheline 1 boundary (64 bytes) --- */
        struct hash *              lcommunity_hash;      /*    64     8 */
        struct hash *              aspath_hash;          /*    72     8 */
        struct community *         community;            /*    80     8 */
        struct ecommunity *        ecommunity;           /*    88     8 */
        struct lcommunity *        lcommunity;           /*    96     8 */
        struct aspath *            aspath;               /*   104     8 */
        safi_t                     safi;                 /*   112     4 */
        uint32_t                   med_matched_value;    /*   116     4 */
        char *                     suppress_map_name;    /*   120     8 */
        /* --- cacheline 2 boundary (128 bytes) --- */
        struct route_map *         suppress_map;         /*   128     8 */

        /* size: 136, cachelines: 3, members: 22 */
        /* sum members: 134, holes: 1, sum holes: 2 */
        /* last cacheline: 8 bytes */
};
```

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
This commit is contained in:
Donatas Abraitis 2024-01-29 16:18:54 +02:00
parent 0804038916
commit a699cc1796
1 changed files with 11 additions and 10 deletions
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21
bgpd/bgp_route.h
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@ -416,6 +416,17 @@ struct bgp_aggregate {
/* AS set generation. */
uint8_t as_set;
/* Optional modify flag to override ORIGIN */
uint8_t origin;
/** Are there MED mismatches? */
bool med_mismatched;
/* MED matching state. */
/** Did we get the first MED value? */
bool med_initialized;
/** Match only equal MED. */
bool match_med;
/* Route-map for aggregated route. */
struct {
char *name;
@ -431,9 +442,6 @@ struct bgp_aggregate {
/* Count of routes of origin type egp under this aggregate. */
unsigned long egp_origin_count;
/* Optional modify flag to override ORIGIN */
uint8_t origin;
/* Hash containing the communities of all the
* routes under this aggregate.
*/
@ -469,13 +477,6 @@ struct bgp_aggregate {
/* SAFI configuration. */
safi_t safi;
/** Match only equal MED. */
bool match_med;
/* MED matching state. */
/** Did we get the first MED value? */
bool med_initialized;
/** Are there MED mismatches? */
bool med_mismatched;
/** MED value found in current group. */
uint32_t med_matched_value;