mirror/lwip
1
0
Fork 0
mirror of https://github.com/lwip-tcpip/lwip.git synced 2024-12-25 00:14:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add flushing CPU cache to zero-copy RX code example

Browse Source
This commit is contained in:
Dirk Ziegelmeier 2017-12-24 13:12:32 +01:00
parent 27ca731242
commit e77099673c
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
doc/ZeroCopyRx.c
View File

@ -12,6 +12,9 @@ void my_pbuf_free_custom(void* p)
my_custom_pbuf_t* my_puf = (my_custom_pbuf_t*)p; my_custom_pbuf_t* my_puf = (my_custom_pbuf_t*)p;
// flush data cache here - lwIP and/or application may have written into buffer!
flush_cpu_cache(p->payload, p->tot_len);
SYS_ARCH_PROTECT(old_level); SYS_ARCH_PROTECT(old_level);
free_rx_dma_descriptor(my_pbuf->dma_descriptor); free_rx_dma_descriptor(my_pbuf->dma_descriptor);
LWIP_MEMPOOL_FREE(RX_POOL, my_pbuf); LWIP_MEMPOOL_FREE(RX_POOL, my_pbuf);