5799c2bce7
When allocating a new mbuf or bus_dmamap_load()-ing it fails, we can just keep the old mbuf since we are dropping that packet anyway. Instead of doing bus_dmamap_create() and bus_dmamap_destroy() all the time, create an extra bus_dmamap_t which we can use to safely try bus_dmamap_load()-ing the new mbuf. On success we just swap the spare bus_dmamap_t with the data->map of that ring entry. Tested: Tested with Intel AC7260, verified with vmstat -m that new kernel no longer visibly leaks memory from the M_DEVBUF malloc type. Before, leakage was 1KB every few seconds while ping(8)-ing over the wlan connection. Submitted by: Imre Vadasz <imre@vdsz.com> Approved by: re@ Obtained from: DragonflyBSD.git cc440b26818b5dfdd9af504d71c1b0e6522b53ef Differential Revision: https://reviews.freebsd.org/D6742 |
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| .. | ||
| if_iwm_binding.c | ||
| if_iwm_binding.h | ||
| if_iwm_debug.h | ||
| if_iwm_led.c | ||
| if_iwm_led.h | ||
| if_iwm_mac_ctxt.c | ||
| if_iwm_mac_ctxt.h | ||
| if_iwm_pcie_trans.c | ||
| if_iwm_pcie_trans.h | ||
| if_iwm_phy_ctxt.c | ||
| if_iwm_phy_ctxt.h | ||
| if_iwm_phy_db.c | ||
| if_iwm_phy_db.h | ||
| if_iwm_power.c | ||
| if_iwm_power.h | ||
| if_iwm_scan.c | ||
| if_iwm_scan.h | ||
| if_iwm_time_event.c | ||
| if_iwm_time_event.h | ||
| if_iwm_util.c | ||
| if_iwm_util.h | ||
| if_iwm.c | ||
| if_iwmreg.h | ||
| if_iwmvar.h | ||