git: 3a57bb60f4ad - stable/13 - pf: use M_WAITOK where possible

[Kristof Provost]

The branch stable/13 has been updated by kp:

URL: https://cgit.FreeBSD.org/src/commit/?id=3a57bb60f4ad6afdfc0bbf833e7b6cf62a2038e8

commit 3a57bb60f4ad6afdfc0bbf833e7b6cf62a2038e8
Author:     Kristof Provost <kp at FreeBSD.org>
AuthorDate: 2021-06-09 12:00:07 +0000
Commit:     Kristof Provost <kp at FreeBSD.org>
CommitDate: 2021-06-17 12:38:08 +0000

    pf: use M_WAITOK where possible
    
    In the ioctl path use M_WAITOK allocations whereever possible. These are
    less sensitive to memory pressure, and ioctl requests have no hard
    deadlines.
    
    Reviewed by:    donner
    MFC after:      1 week
    Sponsored by:   Rubicon Communications, LLC ("Netgate")
    Differential Revision:  https://reviews.freebsd.org/D30702
    
    (cherry picked from commit ea21980a3facfed4c2c6fd10d0f16276564fb540)
---
 sys/netpfil/pf/pf_ioctl.c | 78 ++++++++---------------------------------------
 1 file changed, 13 insertions(+), 65 deletions(-)

diff --git a/sys/netpfil/pf/pf_ioctl.c b/sys/netpfil/pf/pf_ioctl.c
index be7b8be23a31..30f12da782e6 100644
--- a/sys/netpfil/pf/pf_ioctl.c
+++ b/sys/netpfil/pf/pf_ioctl.c
@@ -3773,11 +3773,7 @@ DIOCCHANGEADDR_error:
 
 		totlen = io->pfrio_size * sizeof(struct pfr_table);
 		pfrts = mallocarray(io->pfrio_size, sizeof(struct pfr_table),
-		    M_TEMP, M_NOWAIT);
-		if (pfrts == NULL) {
-			error = ENOMEM;
-			break;
-		}
+		    M_TEMP, M_WAITOK);
 		error = copyin(io->pfrio_buffer, pfrts, totlen);
 		if (error) {
 			free(pfrts, M_TEMP);
@@ -3862,11 +3858,7 @@ DIOCCHANGEADDR_error:
 		}
 		totlen = io->pfrio_size * sizeof(struct pfr_addr);
 		pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
-		    M_TEMP, M_NOWAIT);
-		if (! pfras) {
-			error = ENOMEM;
-			break;
-		}
+		    M_TEMP, M_WAITOK);
 		error = copyin(io->pfrio_buffer, pfras, totlen);
 		if (error) {
 			free(pfras, M_TEMP);
@@ -3900,11 +3892,7 @@ DIOCCHANGEADDR_error:
 		}
 		totlen = io->pfrio_size * sizeof(struct pfr_addr);
 		pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
-		    M_TEMP, M_NOWAIT);
-		if (! pfras) {
-			error = ENOMEM;
-			break;
-		}
+		    M_TEMP, M_WAITOK);
 		error = copyin(io->pfrio_buffer, pfras, totlen);
 		if (error) {
 			free(pfras, M_TEMP);
@@ -3942,11 +3930,7 @@ DIOCCHANGEADDR_error:
 		}
 		totlen = count * sizeof(struct pfr_addr);
 		pfras = mallocarray(count, sizeof(struct pfr_addr), M_TEMP,
-		    M_NOWAIT);
-		if (! pfras) {
-			error = ENOMEM;
-			break;
-		}
+		    M_WAITOK);
 		error = copyin(io->pfrio_buffer, pfras, totlen);
 		if (error) {
 			free(pfras, M_TEMP);
@@ -3981,11 +3965,7 @@ DIOCCHANGEADDR_error:
 		}
 		totlen = io->pfrio_size * sizeof(struct pfr_addr);
 		pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
-		    M_TEMP, M_NOWAIT);
-		if (! pfras) {
-			error = ENOMEM;
-			break;
-		}
+		    M_TEMP, M_WAITOK);
 		PF_RULES_RLOCK();
 		error = pfr_get_addrs(&io->pfrio_table, pfras,
 		    &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
@@ -4013,11 +3993,7 @@ DIOCCHANGEADDR_error:
 		}
 		totlen = io->pfrio_size * sizeof(struct pfr_astats);
 		pfrastats = mallocarray(io->pfrio_size,
-		    sizeof(struct pfr_astats), M_TEMP, M_NOWAIT);
-		if (! pfrastats) {
-			error = ENOMEM;
-			break;
-		}
+		    sizeof(struct pfr_astats), M_TEMP, M_WAITOK);
 		PF_RULES_RLOCK();
 		error = pfr_get_astats(&io->pfrio_table, pfrastats,
 		    &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL);
@@ -4045,11 +4021,7 @@ DIOCCHANGEADDR_error:
 		}
 		totlen = io->pfrio_size * sizeof(struct pfr_addr);
 		pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
-		    M_TEMP, M_NOWAIT);
-		if (! pfras) {
-			error = ENOMEM;
-			break;
-		}
+		    M_TEMP, M_WAITOK);
 		error = copyin(io->pfrio_buffer, pfras, totlen);
 		if (error) {
 			free(pfras, M_TEMP);
@@ -4083,11 +4055,7 @@ DIOCCHANGEADDR_error:
 		}
 		totlen = io->pfrio_size * sizeof(struct pfr_addr);
 		pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
-		    M_TEMP, M_NOWAIT);
-		if (! pfras) {
-			error = ENOMEM;
-			break;
-		}
+		    M_TEMP, M_WAITOK);
 		error = copyin(io->pfrio_buffer, pfras, totlen);
 		if (error) {
 			free(pfras, M_TEMP);
@@ -4121,11 +4089,7 @@ DIOCCHANGEADDR_error:
 		}
 		totlen = io->pfrio_size * sizeof(struct pfr_addr);
 		pfras = mallocarray(io->pfrio_size, sizeof(struct pfr_addr),
-		    M_TEMP, M_NOWAIT);
-		if (! pfras) {
-			error = ENOMEM;
-			break;
-		}
+		    M_TEMP, M_WAITOK);
 		error = copyin(io->pfrio_buffer, pfras, totlen);
 		if (error) {
 			free(pfras, M_TEMP);
@@ -4174,11 +4138,7 @@ DIOCCHANGEADDR_error:
 		}
 		totlen = sizeof(struct pfioc_trans_e) * io->size;
 		ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e),
-		    M_TEMP, M_NOWAIT);
-		if (! ioes) {
-			error = ENOMEM;
-			break;
-		}
+		    M_TEMP, M_WAITOK);
 		error = copyin(io->array, ioes, totlen);
 		if (error) {
 			free(ioes, M_TEMP);
@@ -4251,11 +4211,7 @@ DIOCCHANGEADDR_error:
 		}
 		totlen = sizeof(struct pfioc_trans_e) * io->size;
 		ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e),
-		    M_TEMP, M_NOWAIT);
-		if (! ioes) {
-			error = ENOMEM;
-			break;
-		}
+		    M_TEMP, M_WAITOK);
 		error = copyin(io->array, ioes, totlen);
 		if (error) {
 			free(ioes, M_TEMP);
@@ -4330,11 +4286,7 @@ DIOCCHANGEADDR_error:
 
 		totlen = sizeof(struct pfioc_trans_e) * io->size;
 		ioes = mallocarray(io->size, sizeof(struct pfioc_trans_e),
-		    M_TEMP, M_NOWAIT);
-		if (ioes == NULL) {
-			error = ENOMEM;
-			break;
-		}
+		    M_TEMP, M_WAITOK);
 		error = copyin(io->array, ioes, totlen);
 		if (error) {
 			free(ioes, M_TEMP);
@@ -4537,11 +4489,7 @@ DIOCCHANGEADDR_error:
 
 		bufsiz = io->pfiio_size * sizeof(struct pfi_kif);
 		ifstore = mallocarray(io->pfiio_size, sizeof(struct pfi_kif),
-		    M_TEMP, M_NOWAIT);
-		if (ifstore == NULL) {
-			error = ENOMEM;
-			break;
-		}
+		    M_TEMP, M_WAITOK);
 
 		PF_RULES_RLOCK();
 		pfi_get_ifaces(io->pfiio_name, ifstore, &io->pfiio_size);