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sys/net/gnrc/pkt: use uint8_t for user count

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It's very unlikely that a pkt snip will have more than 255 users.
Use a uint8_t here to save 4 bytes per snip as this now fits into
the ununsed struct padding.
This commit is contained in:
Benjamin Valentin 2024-11-13 14:37:32 +01:00
parent 2623762c16
commit db2f3bd3dd
1 changed files with 7 additions and 6 deletions
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13
sys/include/net/gnrc/pkt.h
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@ -110,17 +110,18 @@ typedef struct gnrc_pktsnip {
struct gnrc_pktsnip *next; /**< next snip in the packet */
void *data; /**< pointer to the data of the snip */
size_t size; /**< the length of the snip in byte */
/* end of iolist_t */
#ifdef MODULE_GNRC_NETERR
kernel_pid_t err_sub; /**< subscriber to errors related to this
* packet snip */
#endif
gnrc_nettype_t type; /**< protocol of the packet snip */
/**
* @brief Counter of threads currently having control over this packet.
*
* @internal
*/
unsigned int users;
gnrc_nettype_t type; /**< protocol of the packet snip */
#ifdef MODULE_GNRC_NETERR
kernel_pid_t err_sub; /**< subscriber to errors related to this
* packet snip */
#endif
uint8_t users;
} gnrc_pktsnip_t;
/**